text: /*
     +----------------------------------------------------------------------+
     | PHP Version 5                                                        |
     +----------------------------------------------------------------------+
     | Copyright (c) 1997-2015 The PHP Group                                |
     +----------------------------------------------------------------------+
     | This source file is subject to version 3.01 of the PHP license,      |
     | that is bundled with this package in the file LICENSE, and is        |
     | available through the world-wide-web at the following url:           |
     | http://www.php.net/license/3_01.txt                                  |
     | If you did not receive a copy of the PHP license and are unable to   |
     | obtain it through the world-wide-web, please send a note to          |
     | license@php.net so we can mail you a copy immediately.               |
     +----------------------------------------------------------------------+
     | Authors: Zeev Suraski <zeev@zend.com>                                |
     |          Tom May <tom@go2net.com>                                    |
     |          Timm Friebe <php_sybase_ct@thekid.de>                       |
     +----------------------------------------------------------------------+
   */
  
  /* $Id$ */
  
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  
  #include "php.h"
  #include "php_sybase_ct.h"
  #include "ext/standard/php_standard.h"
  #include "ext/standard/info.h"
  #include "php_globals.h"
  #include "php_ini.h"
  
  /* True globals, no need for thread safety */
  static int le_link, le_plink, le_result;
  
  #if HAVE_SYBASE_CT
  
  ZEND_DECLARE_MODULE_GLOBALS(sybase)
  static PHP_GINIT_FUNCTION(sybase);
  static PHP_GSHUTDOWN_FUNCTION(sybase);
  
  /* {{{ arginfo */
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_connect, 0, 0, 0)
  	ZEND_ARG_INFO(0, host)
  	ZEND_ARG_INFO(0, user)
  	ZEND_ARG_INFO(0, password)
  	ZEND_ARG_INFO(0, charset)
  	ZEND_ARG_INFO(0, appname)
  	ZEND_ARG_INFO(0, new)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_pconnect, 0, 0, 0)
  	ZEND_ARG_INFO(0, host)
  	ZEND_ARG_INFO(0, user)
  	ZEND_ARG_INFO(0, password)
  	ZEND_ARG_INFO(0, charset)
  	ZEND_ARG_INFO(0, appname)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_close, 0, 0, 0)
  	ZEND_ARG_INFO(0, link_id)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_select_db, 0, 0, 1)
  	ZEND_ARG_INFO(0, database)
  	ZEND_ARG_INFO(0, link_id)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_query, 0, 0, 1)
  	ZEND_ARG_INFO(0, query)
  	ZEND_ARG_INFO(0, link_id)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_unbuffered_query, 0, 0, 1)
  	ZEND_ARG_INFO(0, query)
  	ZEND_ARG_INFO(0, link_id)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_free_result, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_get_last_message, 0, 0, 1)
  	ZEND_ARG_INFO(0, d)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_num_rows, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_num_fields, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_row, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_object, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  	ZEND_ARG_INFO(0, object)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_array, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_assoc, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_data_seek, 0, 0, 2)
  	ZEND_ARG_INFO(0, result)
  	ZEND_ARG_INFO(0, offset)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_field, 0, 0, 1)
  	ZEND_ARG_INFO(0, result)
  	ZEND_ARG_INFO(0, offset)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_field_seek, 0, 0, 2)
  	ZEND_ARG_INFO(0, result)
  	ZEND_ARG_INFO(0, offset)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_result, 0, 0, 3)
  	ZEND_ARG_INFO(0, result)
  	ZEND_ARG_INFO(0, row)
  	ZEND_ARG_INFO(0, field)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_affected_rows, 0, 0, 0)
  	ZEND_ARG_INFO(0, link_id)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_min_client_severity, 0, 0, 1)
  	ZEND_ARG_INFO(0, severity)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_min_server_severity, 0, 0, 1)
  	ZEND_ARG_INFO(0, severity)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_deadlock_retry_count, 0, 0, 1)
  	ZEND_ARG_INFO(0, retry_count)
  ZEND_END_ARG_INFO()
  
  ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_set_message_handler, 0, 0, 1)
  	ZEND_ARG_INFO(0, error_func)
  	ZEND_ARG_INFO(0, connection)
  ZEND_END_ARG_INFO()
  /* }}} */
  
  const zend_function_entry sybase_functions[] = {
  	PHP_FE(sybase_connect,				arginfo_sybase_connect)
  	PHP_FE(sybase_pconnect,				arginfo_sybase_pconnect)
  	PHP_FE(sybase_close, 				arginfo_sybase_close)
  	PHP_FE(sybase_select_db, 			arginfo_sybase_select_db)
  	PHP_FE(sybase_query,				arginfo_sybase_query)
  	PHP_FE(sybase_unbuffered_query,		arginfo_sybase_unbuffered_query)
  	PHP_FE(sybase_free_result,			arginfo_sybase_free_result)
  	PHP_FE(sybase_get_last_message,		arginfo_sybase_get_last_message)
  	PHP_FE(sybase_num_rows,				arginfo_sybase_num_rows)
  	PHP_FE(sybase_num_fields,			arginfo_sybase_num_fields)
  	PHP_FE(sybase_fetch_row,			arginfo_sybase_fetch_row)
  	PHP_FE(sybase_fetch_array,			arginfo_sybase_fetch_array)
  	PHP_FE(sybase_fetch_assoc,			arginfo_sybase_fetch_assoc)
  	PHP_FE(sybase_fetch_object,			arginfo_sybase_fetch_object)
  	PHP_FE(sybase_data_seek,			arginfo_sybase_data_seek)
  	PHP_FE(sybase_fetch_field,			arginfo_sybase_fetch_field)
  	PHP_FE(sybase_field_seek, 			arginfo_sybase_field_seek)
  	PHP_FE(sybase_result,				arginfo_sybase_result)
  	PHP_FE(sybase_affected_rows, 		arginfo_sybase_affected_rows)
  	PHP_FE(sybase_min_client_severity,	arginfo_sybase_min_client_severity)
  	PHP_FE(sybase_min_server_severity,	arginfo_sybase_min_server_severity)
  	PHP_FE(sybase_set_message_handler,	arginfo_sybase_set_message_handler)
  	PHP_FE(sybase_deadlock_retry_count, arginfo_sybase_deadlock_retry_count)
  
  #if !defined(PHP_WIN32) && !defined(HAVE_MSSQL)
  	PHP_FALIAS(mssql_connect, 	sybase_connect, 	arginfo_sybase_connect)
  	PHP_FALIAS(mssql_pconnect, 	sybase_pconnect, 	arginfo_sybase_pconnect)
  	PHP_FALIAS(mssql_close, 	sybase_close, 		arginfo_sybase_close)
  	PHP_FALIAS(mssql_select_db, sybase_select_db, 	arginfo_sybase_select_db)
  	PHP_FALIAS(mssql_query, 	sybase_query, 		arginfo_sybase_query)
  	PHP_FALIAS(mssql_unbuffered_query, 	sybase_unbuffered_query, 	arginfo_sybase_unbuffered_query)
  	PHP_FALIAS(mssql_free_result, 		sybase_free_result, 		arginfo_sybase_free_result)
  	PHP_FALIAS(mssql_get_last_message, 	sybase_get_last_message, 	arginfo_sybase_get_last_message)
  	PHP_FALIAS(mssql_num_rows,	 	sybase_num_rows, 		arginfo_sybase_num_rows)
  	PHP_FALIAS(mssql_num_fields, 	sybase_num_fields, 		arginfo_sybase_num_fields)
  	PHP_FALIAS(mssql_fetch_row, 	sybase_fetch_row, 		arginfo_sybase_fetch_row)
  	PHP_FALIAS(mssql_fetch_array, 	sybase_fetch_array, 	arginfo_sybase_fetch_array)
  	PHP_FALIAS(mssql_fetch_assoc, 	sybase_fetch_assoc, 	arginfo_sybase_fetch_assoc)
  	PHP_FALIAS(mssql_fetch_object, 	sybase_fetch_object, 	arginfo_sybase_fetch_object)
  	PHP_FALIAS(mssql_data_seek, 	sybase_data_seek, 		arginfo_sybase_data_seek)
  	PHP_FALIAS(mssql_fetch_field, 	sybase_fetch_field, 	arginfo_sybase_fetch_field)
  	PHP_FALIAS(mssql_field_seek, 	sybase_field_seek, 		arginfo_sybase_field_seek)
  	PHP_FALIAS(mssql_result, 		sybase_result, 			arginfo_sybase_result)
  	PHP_FALIAS(mssql_affected_rows, sybase_affected_rows, 	arginfo_sybase_affected_rows)
  	PHP_FALIAS(mssql_min_client_severity,   sybase_min_client_severity, 	arginfo_sybase_min_client_severity)
  	PHP_FALIAS(mssql_min_server_severity, 	sybase_min_server_severity, 	arginfo_sybase_min_server_severity)
  	PHP_FALIAS(mssql_set_message_handler, 	sybase_set_message_handler, 	arginfo_sybase_set_message_handler)
  	PHP_FALIAS(mssql_deadlock_retry_count, 	sybase_deadlock_retry_count, 	arginfo_sybase_deadlock_retry_count)
  #endif
  	PHP_FE_END
  };
  
  zend_module_entry sybase_module_entry = {
  	STANDARD_MODULE_HEADER,
  	"sybase_ct",
  	sybase_functions,
  	PHP_MINIT(sybase),
  	PHP_MSHUTDOWN(sybase),
  	PHP_RINIT(sybase),
  	PHP_RSHUTDOWN(sybase),
  	PHP_MINFO(sybase),
  	NO_VERSION_YET,
  	PHP_MODULE_GLOBALS(sybase),
  	PHP_GINIT(sybase),
  	PHP_GSHUTDOWN(sybase),
  	NULL,
  	STANDARD_MODULE_PROPERTIES_EX
  };
  
  /* static CS_CONTEXT *context; */
  
  #ifdef COMPILE_DL_SYBASE_CT
  ZEND_GET_MODULE(sybase)
  #endif
  
  ZEND_DECLARE_MODULE_GLOBALS(sybase)
  
  #define CHECK_LINK(link) { if (link==-1) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  A link to the server could not be established"); RETURN_FALSE; } }
  
  
  static int _clean_invalid_results(zend_rsrc_list_entry *le TSRMLS_DC)
  {
  	if (Z_TYPE_P(le) == le_result) {
  		sybase_link *sybase_ptr = ((sybase_result *) le->ptr)->sybase_ptr;
  
  		if (!sybase_ptr->valid) {
  			return 1;
  		}
  	}
  	return 0;
  }
  
  #define efree_n(x)  { efree(x); x = NULL; }
  #define efree_if(x) if (x) efree_n(x)
  
  #ifdef PHP_SYBASE_DEBUG
  #define FREE_SYBASE_RESULT(result)                                                            \
  	if (result) {                                                                             \
  	    fprintf(stderr, "_free_sybase_result(%p) called from line #%d\n", result, __LINE__);  \
  		fflush(stderr);                                                                       \
  		_free_sybase_result(result);                                                          \
  		result = NULL;                                                                        \
  	}
  #else
  #define FREE_SYBASE_RESULT(result)                                                            \
  	if (result) {                                                                             \
  		_free_sybase_result(result);                                                          \
  		result = NULL;                                                                        \
  	}
  #endif
  static void _free_sybase_result(sybase_result *result)
  {
  	int i, j;
  
  	if (result->data) {
  		for (i = 0; i < (result->store ? result->num_rows : MIN(1, result->num_rows)); i++) {
  			for (j=0; j<result->num_fields; j++) {
  				zval_dtor(&result->data[i][j]);
  			}
  			efree(result->data[i]);
  		}
  		efree(result->data);
  	}
  
  	if (result->fields) {
  		for (i=0; i<result->num_fields; i++) {
  			STR_FREE(result->fields[i].name);
  			STR_FREE(result->fields[i].column_source);
  		}
  		efree(result->fields);
  	}
  
  	if (result->tmp_buffer) {
  		for (i=0; i<result->num_fields; i++) {
  			efree(result->tmp_buffer[i]);
  		}
  		efree(result->tmp_buffer);
  	}
  
  	efree_if(result->lengths);
  	efree_if(result->indicators);
  	efree_if(result->datafmt);
  	efree_if(result->numerics);
  	efree_if(result->types);
  
  	efree(result);
  }
  
  /* Forward declaration */
  static int php_sybase_finish_results (sybase_result *result TSRMLS_DC);
  
  static void php_free_sybase_result(zend_rsrc_list_entry *rsrc TSRMLS_DC)
  {
  	sybase_result *result = (sybase_result *)rsrc->ptr;
  
  	/* Check to see if we've read all rows */
  	if (result->sybase_ptr && result->sybase_ptr->active_result_index) {
  		if (result->sybase_ptr->cmd) {
  			ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
  		}
  		php_sybase_finish_results(result TSRMLS_CC);
  	}
  
  	FREE_SYBASE_RESULT(result);
  }
  
  static void _close_sybase_link(zend_rsrc_list_entry *rsrc TSRMLS_DC)
  {
  	sybase_link *sybase_ptr = (sybase_link *)rsrc->ptr;
  	CS_INT con_status;
  
  	sybase_ptr->valid = 0;
  	if (sybase_ptr->callback_name != NULL) {
  		zval_ptr_dtor(&sybase_ptr->callback_name);
  		sybase_ptr->callback_name= NULL;
  	}
  	zend_hash_apply(&EG(regular_list), (apply_func_t) _clean_invalid_results TSRMLS_CC);
  
  	/* Non-persistent connections will always be connected or we wouldn't
  	 * get here, but since we want to check the death status anyway
  	 * we might as well double-check the connect status.
  	 */
  	if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
  					 &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status on close");
  		/* Assume the worst. */
  		con_status = CS_CONSTAT_CONNECTED | CS_CONSTAT_DEAD;
  	}
  	if (con_status & CS_CONSTAT_CONNECTED) {
  		if ((con_status & CS_CONSTAT_DEAD) || ct_close(sybase_ptr->connection, CS_UNUSED)!=CS_SUCCEED) {
  			ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
  		}
  	}
  
  	ct_cmd_drop(sybase_ptr->cmd);
  	ct_con_drop(sybase_ptr->connection);
  	efree(sybase_ptr);
  	SybCtG(num_links)--;
  }
  
  
  static void _close_sybase_plink(zend_rsrc_list_entry *rsrc TSRMLS_DC)
  {
  	sybase_link *sybase_ptr = (sybase_link *)rsrc->ptr;
  	CS_INT con_status;
  
  	/* Persistent connections may have been closed before a failed
  	 * reopen attempt.
  	 */
  	if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
  					 &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status on close");
  		/* Assume the worst. */
  		con_status = CS_CONSTAT_CONNECTED | CS_CONSTAT_DEAD;
  	}
  	if (con_status & CS_CONSTAT_CONNECTED) {
  		if ((con_status & CS_CONSTAT_DEAD) || ct_close(sybase_ptr->connection, CS_UNUSED)!=CS_SUCCEED) {
  			ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
  		}
  	}
  
  	ct_con_drop(sybase_ptr->connection);
  	free(sybase_ptr);
  	SybCtG(num_persistent)--;
  	SybCtG(num_links)--;
  }
  
  
  static CS_RETCODE CS_PUBLIC _client_message_handler(CS_CONTEXT *context, CS_CONNECTION *connection, CS_CLIENTMSG *errmsg)
  {
  	TSRMLS_FETCH();
  
  	if (CS_SEVERITY(errmsg->msgnumber) >= SybCtG(min_client_severity)) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Client message:  %s (severity %ld)", errmsg->msgstring, (long)CS_SEVERITY(errmsg->msgnumber));
  	}
  	STR_FREE(SybCtG(server_message));
  	SybCtG(server_message) = estrdup(errmsg->msgstring);
  
  
  	/* If this is a timeout message, return CS_FAIL to cancel the
  	 * operation and mark the connection as dead.
  	 */
  	if (CS_SEVERITY(errmsg->msgnumber) == CS_SV_RETRY_FAIL &&
  		CS_NUMBER(errmsg->msgnumber) == 63 &&
  		CS_ORIGIN(errmsg->msgnumber) == 2 &&
  		CS_LAYER(errmsg->msgnumber) == 1)
  	{
  		return CS_FAIL;
  	}
  
  	return CS_SUCCEED;
  }
  
  static int _call_message_handler(zval *callback_name, CS_SERVERMSG *srvmsg TSRMLS_DC)
  {
  	int handled = 0;
  	zval *msgnumber, *severity, *state, *line, *text, *retval = NULL;
  	zval **args[5];
  
  	/* Border case - empty fcall */
  	if (NULL == callback_name) return 0;
  
  	/* Build arguments */
  	MAKE_STD_ZVAL(msgnumber);
  	ZVAL_LONG(msgnumber, srvmsg->msgnumber);
  	args[0] = &msgnumber;
  
  	MAKE_STD_ZVAL(severity);
  	ZVAL_LONG(severity, srvmsg->severity);
  	args[1] = &severity;
  
  	MAKE_STD_ZVAL(state);
  	ZVAL_LONG(state, srvmsg->state);
  	args[2] = &state;
  
  	MAKE_STD_ZVAL(line);
  	ZVAL_LONG(line, srvmsg->line);
  	args[3] = &line;
  
  	MAKE_STD_ZVAL(text);	
  	ZVAL_STRING(text, srvmsg->text, 1);
  	args[4] = &text;
  
  	if (call_user_function_ex(EG(function_table), NULL, callback_name, &retval, 5, args, 0, NULL TSRMLS_CC) == FAILURE) {
  		zval expr_copy;
  		int use_copy;
  
  		zend_make_printable_zval(callback_name, &expr_copy, &use_copy);
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot call the messagehandler %s", Z_STRVAL(expr_copy));
  		zval_dtor(&expr_copy);
  	}
  
  	if (retval) {
  		handled = ((Z_TYPE_P(retval) != IS_BOOL) || (Z_BVAL_P(retval) != 0));
  		zval_ptr_dtor(&retval);
  	} else {
  		handled = 0;
  	}
  
  	zval_ptr_dtor(&msgnumber);
  	zval_ptr_dtor(&severity);
  	zval_ptr_dtor(&state);
  	zval_ptr_dtor(&line);
  	zval_ptr_dtor(&text);
  
  	return handled;
  }
  
  static CS_RETCODE CS_PUBLIC _server_message_handler(CS_CONTEXT *context, CS_CONNECTION *connection, CS_SERVERMSG *srvmsg)
  {
  	sybase_link *sybase;
  	int handled = 0;
  	TSRMLS_FETCH();
  
  	/* Remember the last server message in any case */
  	STR_FREE(SybCtG(server_message));
  	SybCtG(server_message) = estrdup(srvmsg->text);
  
  	/* Retrieve sybase link */
  	if (ct_con_props(connection, CS_GET, CS_USERDATA, &sybase, CS_SIZEOF(sybase), NULL) != CS_SUCCEED) {
  		sybase = NULL;
  	}
  
  	/* If this is a deadlock message, set the connection's deadlock flag
  	 * so we will retry the request.  Sorry about the bare constant here,
  	 * but it's not defined anywhere and it's a "well-known" number.
  	 */
  	if (sybase && (srvmsg->msgnumber == 1205)) {
  		sybase->deadlock = 1;
  	}
  
  	/* Check mininum server severity level */
  	if (srvmsg->severity < SybCtG(min_server_severity)) {
  		return CS_SUCCEED;
  	}
  
  	/* Call global message handler */
  	handled = handled | _call_message_handler(SybCtG(callback_name), srvmsg TSRMLS_CC);
  
  	/* Call link specific message handler */
  	if (sybase) {
  		handled = handled | _call_message_handler(sybase->callback_name, srvmsg TSRMLS_CC);
  	}
  
  	/* Spit out a warning if neither of them has handled this message */
  	if (!handled) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Server message:  %s (severity %ld, procedure %s)",
  				srvmsg->text, (long)srvmsg->severity, ((srvmsg->proclen>0) ? srvmsg->proc : "N/A"));
  	}
  
  	return CS_SUCCEED;
  }
  
  
  PHP_INI_BEGIN()
  	STD_PHP_INI_BOOLEAN("sybct.allow_persistent", "1", PHP_INI_SYSTEM, OnUpdateLong, allow_persistent, zend_sybase_globals, sybase_globals)
  	STD_PHP_INI_ENTRY_EX("sybct.max_persistent", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_persistent, zend_sybase_globals, sybase_globals, display_link_numbers)
  	STD_PHP_INI_ENTRY_EX("sybct.max_links", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_links, zend_sybase_globals, sybase_globals, display_link_numbers)
  	STD_PHP_INI_ENTRY("sybct.min_server_severity", "10", PHP_INI_ALL, OnUpdateLong, min_server_severity, zend_sybase_globals, sybase_globals)
  	STD_PHP_INI_ENTRY("sybct.min_client_severity", "10", PHP_INI_ALL, OnUpdateLong, min_client_severity, zend_sybase_globals, sybase_globals)
  	STD_PHP_INI_ENTRY("sybct.login_timeout", "-1", PHP_INI_ALL, OnUpdateLong, login_timeout, zend_sybase_globals, sybase_globals)
  	STD_PHP_INI_ENTRY("sybct.hostname", NULL, PHP_INI_ALL, OnUpdateString, hostname, zend_sybase_globals, sybase_globals)
  	STD_PHP_INI_ENTRY_EX("sybct.deadlock_retry_count", "0", PHP_INI_ALL, OnUpdateLong, deadlock_retry_count, zend_sybase_globals, sybase_globals, display_link_numbers)
  PHP_INI_END()
  
  
  static PHP_GINIT_FUNCTION(sybase)
  {
  	long opt;
  
  	if (cs_ctx_alloc(CTLIB_VERSION, &sybase_globals->context)!=CS_SUCCEED || ct_init(sybase_globals->context, CTLIB_VERSION)!=CS_SUCCEED) {
  		return;
  	}
  
  	/* Initialize message handlers */
  	if (ct_callback(sybase_globals->context, NULL, CS_SET, CS_SERVERMSG_CB, (CS_VOID *)_server_message_handler)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set server message handler");
  	}
  
  	if (ct_callback(sybase_globals->context, NULL, CS_SET, CS_CLIENTMSG_CB, (CS_VOID *)_client_message_handler)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set client message handler");
  	}
  
  	/* Set datetime conversion format to "Nov  3 1998  8:06PM".
  	 * This is the default format for the ct-lib that comes with
  	 * Sybase ASE 11.5.1 for Solaris, but the Linux libraries that
  	 * come with 11.0.3.3 default to "03/11/98" which is singularly
  	 * useless.  This levels the playing field for all platforms.
  	 */
  	{
  		CS_INT dt_convfmt = CS_DATES_SHORT;
  		if (cs_dt_info(sybase_globals->context, CS_SET, NULL, CS_DT_CONVFMT, CS_UNUSED, &dt_convfmt, sizeof(dt_convfmt), NULL)!=CS_SUCCEED) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set datetime conversion format");
  		}
  	}
  
  	/* Set the timeout, which is per context and can't be set with 
  	 * ct_con_props(), so set it globally from the config value if 
  	 * requested.  The default is CS_NO_LIMIT.
  	 * 
  	 * Note that despite some noise in the documentation about using
  	 * signals to implement timeouts, they are actually implemented
  	 * by using poll() or select() on Solaris and Linux.
  	 */
  	if (cfg_get_long("sybct.timeout", &opt)==SUCCESS) {
  		CS_INT cs_timeout = opt;
  		if (ct_config(sybase_globals->context, CS_SET, CS_TIMEOUT, &cs_timeout, CS_UNUSED, NULL)!=CS_SUCCEED) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to update the timeout");
  		}
  	}
  
  	sybase_globals->num_persistent=0;
  	sybase_globals->callback_name = NULL;
  }
  
  
  static PHP_GSHUTDOWN_FUNCTION(sybase)
  {
  	ct_exit(sybase_globals->context, CS_UNUSED);
  	cs_ctx_drop(sybase_globals->context);
  }
  
  PHP_MINIT_FUNCTION(sybase)
  {
  	REGISTER_INI_ENTRIES();
  
  	le_link = zend_register_list_destructors_ex(_close_sybase_link, NULL, "sybase-ct link", module_number);
  	le_plink = zend_register_list_destructors_ex(NULL, _close_sybase_plink, "sybase-ct link persistent", module_number);
  	le_result = zend_register_list_destructors_ex(php_free_sybase_result, NULL, "sybase-ct result", module_number);
  
  	return SUCCESS;
  }
  
  
  
  PHP_RINIT_FUNCTION(sybase)
  {
  	SybCtG(default_link)=-1;
  	SybCtG(num_links) = SybCtG(num_persistent);
  	SybCtG(appname) = estrndup("PHP " PHP_VERSION, sizeof("PHP " PHP_VERSION));
  	SybCtG(server_message) = STR_EMPTY_ALLOC();
  	return SUCCESS;
  }
  
  
  
  PHP_MSHUTDOWN_FUNCTION(sybase)
  {
  	UNREGISTER_INI_ENTRIES();
  #if 0
  	ct_exit(context, CS_UNUSED);
  	cs_ctx_drop(context);
  #endif
  	return SUCCESS;
  }
  
  
  PHP_RSHUTDOWN_FUNCTION(sybase)
  {
  	efree(SybCtG(appname));
  	SybCtG(appname) = NULL;
  	if (SybCtG(callback_name)) {
  		zval_ptr_dtor(&SybCtG(callback_name));
  		SybCtG(callback_name)= NULL;
  	}
  	STR_FREE(SybCtG(server_message));
  	SybCtG(server_message) = NULL;
  	return SUCCESS;
  }
  
  
  static int php_sybase_do_connect_internal(sybase_link *sybase, char *host, char *user, char *passwd, char *charset, char *appname TSRMLS_DC)
  {
  	CS_LOCALE *tmp_locale;
  	long packetsize;
  
  	/* set a CS_CONNECTION record */
  	if (ct_con_alloc(SybCtG(context), &sybase->connection)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to allocate connection record");
  		return 0;
  	}
  
  	/* Note - this saves a copy of sybase, not a pointer to it. */
  	if (ct_con_props(sybase->connection, CS_SET, CS_USERDATA, &sybase, CS_SIZEOF(sybase), NULL)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set userdata");
  		ct_con_drop(sybase->connection);
  		return 0;
  	}
  
  	if (user) {
  		ct_con_props(sybase->connection, CS_SET, CS_USERNAME, user, CS_NULLTERM, NULL);
  	}
  	if (passwd) {
  		ct_con_props(sybase->connection, CS_SET, CS_PASSWORD, passwd, CS_NULLTERM, NULL);
  	}
  	if (appname) {
  		ct_con_props(sybase->connection, CS_SET, CS_APPNAME, appname, CS_NULLTERM, NULL);
  	} else { 
  		ct_con_props(sybase->connection, CS_SET, CS_APPNAME, SybCtG(appname), CS_NULLTERM, NULL);
  	}
  
  	if (SybCtG(hostname)) {
  		ct_con_props(sybase->connection, CS_SET, CS_HOSTNAME, SybCtG(hostname), CS_NULLTERM, NULL);
  	}
  
  	if (charset) {
  		if (cs_loc_alloc(SybCtG(context), &tmp_locale)!=CS_SUCCEED) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to allocate locale information");
  		} else {
  			if (cs_locale(SybCtG(context), CS_SET, tmp_locale, CS_LC_ALL, NULL, CS_NULLTERM, NULL)!=CS_SUCCEED) {
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to load default locale data");
  			} else {
  				if (cs_locale(SybCtG(context), CS_SET, tmp_locale, CS_SYB_CHARSET, charset, CS_NULLTERM, NULL)!=CS_SUCCEED) {
  					php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update character set");
  				} else {
  					if (ct_con_props(sybase->connection, CS_SET, CS_LOC_PROP, tmp_locale, CS_UNUSED, NULL)!=CS_SUCCEED) {
  						php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update connection properties");
  					}
  				}
  			}
  		}
  	}
  	
  	if (cfg_get_long("sybct.packet_size", &packetsize) == SUCCESS) {
  		if (ct_con_props(sybase->connection, CS_SET, CS_PACKETSIZE, (CS_VOID *)&packetsize, CS_UNUSED, NULL) != CS_SUCCEED) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update connection packetsize");
  		}
  	}
  
  	/* Set the login timeout. Actually, the login timeout is per context
  	 * and not per connection, but we will update the context here to 
  	 * allow for code such as the following:
  	 * 
  	 *   ini_set('sybct.login_timeout', $timeout);
  	 *   sybase_connect(...)
  	 * 
  	 * Note that preceding calls to sybase_connect() will now use the 
  	 * updated value and not the default one!
  	 * 
    	 * The default value for CS_LOGIN_TIMEOUT is 60 (1 minute).
  	 */
  	if (SybCtG(login_timeout) != -1) {
  		CS_INT cs_login_timeout = SybCtG(login_timeout);
  		if (ct_config(SybCtG(context), CS_SET, CS_LOGIN_TIMEOUT, &cs_login_timeout, CS_UNUSED, NULL)!=CS_SUCCEED) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to update the login timeout");
  		}
  	}
  
  	sybase->valid = 1;
  	sybase->dead = 0;
  	sybase->active_result_index = 0;
  	sybase->callback_name = NULL;
  
  	/* create the link */
  	if (ct_connect(sybase->connection, host, CS_NULLTERM)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to connect");
  		ct_con_drop(sybase->connection);
  		return 0;
  	}
  
  	if (ct_cmd_alloc(sybase->connection, &sybase->cmd)!=CS_SUCCEED) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to allocate command record");
  		ct_close(sybase->connection, CS_UNUSED);
  		ct_con_drop(sybase->connection);
  		return 0;
  	}
  
  	return 1;
  }
  
  
  static void php_sybase_do_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
  {
  	char *user = NULL, *passwd = NULL, *host = NULL, *charset = NULL, *appname = NULL;
  	char *hashed_details;
  	int hashed_details_length, len;
  	zend_bool new = 0;
  	sybase_link *sybase_ptr;
  
  	host= user= passwd= charset= appname= NULL;
  	if (persistent) {
  		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!s!s!", &host, &len, &user, &len, &passwd, &len, &charset, &len, &appname, &len) == FAILURE) {
  			return;
  		}
  	} else {
  		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!s!s!b", &host, &len, &user, &len, &passwd, &len, &charset, &len, &appname, &len, &new) == FAILURE) {
  			return;
  		}
  	}
  	hashed_details_length = spprintf(
  		&hashed_details, 
  		0, 
  		"sybase_%s_%s_%s_%s_%s",
  		host ? host : "", 
  		user ? user : "", 
  		passwd ? passwd : "", 
  		charset ? charset : "", 
  		appname ? appname : ""
  	);
  
  	if (!SybCtG(allow_persistent)) {
  		persistent=0;
  	}
  	if (persistent) {
  		zend_rsrc_list_entry *le;
  
  		/* try to find if we already have this link in our persistent list */
  		if (zend_hash_find(&EG(persistent_list), hashed_details, hashed_details_length+1, (void **) &le)==FAILURE) {  /* we don't */
  			zend_rsrc_list_entry new_le;
  
  			if (SybCtG(max_links)!=-1 && SybCtG(num_links)>=SybCtG(max_links)) {
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open links (%ld)", SybCtG(num_links));
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  			if (SybCtG(max_persistent)!=-1 && SybCtG(num_persistent)>=SybCtG(max_persistent)) {
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open persistent links (%ld)", SybCtG(num_persistent));
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  
  			sybase_ptr = (sybase_link *) malloc(sizeof(sybase_link));
  			if (!sybase_ptr) {
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  			if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
  				free(sybase_ptr);
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  
  			/* hash it up */
  			Z_TYPE(new_le) = le_plink;
  			new_le.ptr = sybase_ptr;
  			if (zend_hash_update(&EG(persistent_list), hashed_details, hashed_details_length+1, (void *) &new_le, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
  				ct_close(sybase_ptr->connection, CS_UNUSED);
  				ct_con_drop(sybase_ptr->connection);
  				free(sybase_ptr);
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  			SybCtG(num_persistent)++;
  			SybCtG(num_links)++;
  		} else {  /* we do */
  			CS_INT con_status;
  
  			if (Z_TYPE_P(le) != le_plink) {
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  
  			sybase_ptr = (sybase_link *) le->ptr;
  
  			/* If the link has died, close it and overwrite it with a new one. */
  
  			if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
  							 &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status");
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  			if (!(con_status & CS_CONSTAT_CONNECTED) || (con_status & CS_CONSTAT_DEAD) || sybase_ptr->dead) {
  				sybase_link sybase;
  
  				if (con_status & CS_CONSTAT_CONNECTED) {
  					ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
  				}
  				/* Create a new connection, then replace the old
  				 * connection.  If we fail to create a new connection,
  				 * put the old one back so there will be a connection,
  				 * even if it is a non-functional one.  This is because
  				 * code may still be holding an id for this connection
  				 * so we can't free the CS_CONNECTION.
  				 * (This is actually totally hokey, it would be better
  				 * to just ct_con_drop() the connection and set
  				 * sybase_ptr->connection to NULL, then test it for
  				 * NULL before trying to use it elsewhere . . .)
  				 */
  				memcpy(&sybase, sybase_ptr, sizeof(sybase_link));
  				if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
  					memcpy(sybase_ptr, &sybase, sizeof(sybase_link));
  					efree(hashed_details);
  					RETURN_FALSE;
  				}
  				ct_con_drop(sybase.connection); /* drop old connection */
  			}
  		}
  		ZEND_REGISTER_RESOURCE(return_value, sybase_ptr, le_plink);
  	} else { /* non persistent */
  		zend_rsrc_list_entry *index_ptr, new_index_ptr;
  
  		/* first we check the hash for the hashed_details key.  if it exists,
  		 * it should point us to the right offset where the actual sybase link sits.
  		 * if it doesn't, open a new sybase link, add it to the resource list,
  		 * and add a pointer to it with hashed_details as the key.
  		 */
  		if (!new && zend_hash_find(&EG(regular_list), hashed_details, hashed_details_length+1, (void **) &index_ptr)==SUCCESS) {
  			int type, link;
  			void *ptr;
  
  			if (Z_TYPE_P(index_ptr) != le_index_ptr) {
  				efree(hashed_details);
  				RETURN_FALSE;
  			}
  			link = (int) index_ptr->ptr;
  			ptr = zend_list_find(link, &type);   /* check if the link is still there */
  			if (ptr && (type==le_link || type==le_plink)) {
  				zend_list_addref(link);
  				Z_LVAL_P(return_value) = SybCtG(default_link) = link;
  				Z_TYPE_P(return_value) = IS_RESOURCE;
  				efree(hashed_details);
  				return;
  			} else {
  				zend_hash_del(&EG(regular_list), hashed_details, hashed_details_length+1);
  			}
  		}
  		if (SybCtG(max_links)!=-1 && SybCtG(num_links)>=SybCtG(max_links)) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open links (%ld)", SybCtG(num_links));
  			efree(hashed_details);
  			RETURN_FALSE;
  		}
  
  		sybase_ptr = (sybase_link *) emalloc(sizeof(sybase_link));
  		if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
  			efree(sybase_ptr);
  			efree(hashed_details);
  			RETURN_FALSE;
  		}
  
  		/* add it to the list */
  		ZEND_REGISTER_RESOURCE(return_value, sybase_ptr, le_link);
  
  		/* add it to the hash */
  		new_index_ptr.ptr = (void *) Z_LVAL_P(return_value);
  		Z_TYPE(new_index_ptr) = le_index_ptr;
  		if (zend_hash_update(&EG(regular_list), hashed_details, hashed_details_length+1, (void *) &new_index_ptr, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
  			ct_close(sybase_ptr->connection, CS_UNUSED);
  			ct_con_drop(sybase_ptr->connection);
  			efree(sybase_ptr);
  			efree(hashed_details);
  			RETURN_FALSE;
  		}
  		SybCtG(num_links)++;
  	}
  	efree(hashed_details);
  	SybCtG(default_link)=Z_LVAL_P(return_value);
  	zend_list_addref(SybCtG(default_link));
  }
  
  
  static int php_sybase_get_default_link(INTERNAL_FUNCTION_PARAMETERS)
  {
  	if (SybCtG(default_link)==-1) { /* no link opened yet, implicitly open one */
  		ht = 0;
  		php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
  	}
  	return SybCtG(default_link);
  }
  
  
  /* {{{ proto int sybase_connect([string host [, string user [, string password [, string charset [, string appname [, bool new]]]]]])
     Open Sybase server connection */
  PHP_FUNCTION(sybase_connect)
  {
  	php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
  }
  
  /* }}} */
  
  /* {{{ proto int sybase_pconnect([string host [, string user [, string password [, string charset [, string appname]]]]])
     Open persistent Sybase connection */
  PHP_FUNCTION(sybase_pconnect)
  {
  	php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
  }
  
  /* }}} */
  
  inline static int php_sybase_connection_id(zval *sybase_link_index, int *id TSRMLS_DC)
  {
  	if (NULL == sybase_link_index) {
  		if (-1 == SybCtG(default_link)) {
  			return FAILURE;
  		}
  		*id = SybCtG(default_link);
  	} else {
  		*id = -1;   /* explicit resource number */
  	}
  	return SUCCESS;
  }
  
  /* {{{ proto bool sybase_close([resource link_id])
     Close Sybase connection */
  PHP_FUNCTION(sybase_close)
  {
  	zval *sybase_link_index = NULL;
  	sybase_link *sybase_ptr;
  	int id;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &sybase_link_index) == FAILURE) {
  		return;
  	}
  
  	if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection to close");
  		RETURN_FALSE;
  	}
  
  	ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
  
  	if (id == -1) {
  		zend_list_delete(Z_RESVAL_P(sybase_link_index));
  	}
  	if (id != -1 || (sybase_link_index && Z_RESVAL_P(sybase_link_index) == SybCtG(default_link))) {
  		zend_list_delete(SybCtG(default_link));
  		SybCtG(default_link) = -1;
  	}
  
  	RETURN_TRUE;
  }
  
  /* }}} */
  
  
  static int exec_cmd(sybase_link *sybase_ptr, char *cmdbuf)
  {
  	CS_RETCODE retcode;
  	CS_INT restype;
  	int failure=0;
  
  	/* Fail if we already marked this connection dead. */
  
  	if (sybase_ptr->dead) {
  		return FAILURE;
  	}
  
  	/*
  	 ** Get a command handle, store the command string in it, and
  	 ** send it to the server.
  	 */
  
  	if (ct_command(sybase_ptr->cmd, CS_LANG_CMD, cmdbuf, CS_NULLTERM, CS_UNUSED)!=CS_SUCCEED) {
  		sybase_ptr->dead = 1;
  		return FAILURE;
  	}
  	if (ct_send(sybase_ptr->cmd)!=CS_SUCCEED) {
  		sybase_ptr->dead = 1;
  		return FAILURE;
  	}
  
  	while ((retcode = ct_results(sybase_ptr->cmd, &restype))==CS_SUCCEED) {
  		switch ((int) restype) {
  			case CS_CMD_SUCCEED:
  			case CS_CMD_DONE:
  				break;
  
  			case CS_CMD_FAIL:
  				failure=1;
  				break;
  
  			case CS_STATUS_RESULT:
  				ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
  				break;
  
  			default:
  				failure=1;
  				break;
  		}
  		if (failure) {
  			ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  			return FAILURE;
  		}
  	}
  
  	switch (retcode) {
  		case CS_END_RESULTS:
  			return SUCCESS;
  			break;
  
  		case CS_FAIL:
  			/* Hopefully this either cleans up the connection, or the
  			 * connection ends up marked dead so it will be reopened
  			 * if it is persistent.  We may want to do
  			 * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
  			 * doc for ct_results()==CS_FAIL.
  			 */
  			ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  			/* Don't take chances with the vagaries of ct-lib.  Mark it
  			 * dead ourselves.
  			 */
  			sybase_ptr->dead = 1;
  			return FAILURE;
  
  		default:
  			return FAILURE;
  	}
  }
  
  
  /* {{{ proto bool sybase_select_db(string database [, resource link_id])
     Select Sybase database */
  PHP_FUNCTION(sybase_select_db)
  {
  	zval *sybase_link_index = NULL;
  	char *db, *cmdbuf;
  	int id, len;
  	sybase_link *sybase_ptr;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|r", &db, &len, &sybase_link_index) == FAILURE) {
  		return;
  	}
  
  	if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
  		RETURN_FALSE;
  	}
  
  	ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
  
  	spprintf(&cmdbuf, 4 + len + 1, "use %s", db);
  	if (exec_cmd(sybase_ptr, cmdbuf) == FAILURE) {
  		efree(cmdbuf);
  		RETURN_FALSE;
  	} else {
  		efree(cmdbuf);
  		RETURN_TRUE;
  	}
  }
  
  /* }}} */
  
  static int php_sybase_finish_results(sybase_result *result TSRMLS_DC) 
  {
  	int i, fail;
  	CS_RETCODE retcode;
  	CS_INT restype;
  	
  	efree_n(result->datafmt);
  	efree_n(result->lengths);
  	efree_n(result->indicators);
  	efree_n(result->numerics);
  	efree_n(result->types);
  	for (i=0; i<result->num_fields; i++) {
  		efree(result->tmp_buffer[i]);
  	}
  	efree_n(result->tmp_buffer);
  
  	/* Indicate we have read all rows */
  	result->sybase_ptr->active_result_index= 0;
  
  	/* The only restype we should get now is CS_CMD_DONE, possibly
  	 * followed by a CS_STATUS_RESULT/CS_CMD_SUCCEED/CS_CMD_DONE
  	 * sequence if the command was a stored procedure call.  But we
  	 * still need to read and discard unexpected results.  We might
  	 * want to return a failure in this case because the application
  	 * won't be getting all the results it asked for.
  	 */
  	fail = 0;
  	while ((retcode = ct_results(result->sybase_ptr->cmd, &restype))==CS_SUCCEED) {
  		switch ((int) restype) {
  			case CS_CMD_SUCCEED:
  			case CS_CMD_DONE:
  				break;
  
  			case CS_CMD_FAIL:
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Command failed, canceling rest");
  				ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
  				fail = 1;
  				break;
  
  			case CS_COMPUTE_RESULT:
  			case CS_CURSOR_RESULT:
  			case CS_PARAM_RESULT:
  			case CS_ROW_RESULT:
  				/* Unexpected results, cancel them. */
  				php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Unexpected results, canceling current");
  				ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_CURRENT);
  				break;
  
  			case CS_STATUS_RESULT:
  				/* Status result from a stored procedure, cancel it but do not tell user */
  				ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_CURRENT);
  				break;
  
  			default:
  				php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Unexpected results, canceling all");
  				ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
  				break;
  		}
  
  		if (fail) {
  			break;
  		}
  	}
  
  	switch (retcode) {
  		case CS_END_RESULTS:
  			/* Normal. */
  			break;
  
  		case CS_FAIL:
  			/* Hopefully this either cleans up the connection, or the
  			 * connection ends up marked dead so it will be reopened
  			 * if it is persistent.  We may want to do
  			 * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
  			 * doc for ct_results()==CS_FAIL.
  			 */
  			ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
  			/* Don't take chances with the vagaries of ct-lib.  Mark it
  			 * dead ourselves.
  			 */
  			result->sybase_ptr->dead = 1;
  			
  		case CS_CANCELED:
  		default:
  			retcode = CS_FAIL;
  			break;
  	}
  
  	return retcode;
  }
  
  #define RETURN_DOUBLE_VAL(result, buf, length)          \
  	if ((length - 1) <= EG(precision)) {                \
  		errno = 0;                                      \
  		Z_DVAL(result) = zend_strtod(buf, NULL);        \
  		if (errno != ERANGE) {                          \
  			Z_TYPE(result) = IS_DOUBLE;                 \
  		} else {                                        \
  			ZVAL_STRINGL(&result, buf, length- 1, 1);   \
  		}                                               \
  	} else {                                            \
  		ZVAL_STRINGL(&result, buf, length- 1, 1);       \
  	}
  
  static int php_sybase_fetch_result_row(sybase_result *result, int numrows TSRMLS_DC)
  {
  	int i, j;
  	CS_INT retcode;
  	
  	/* We've already fetched everything */
  	if (result->last_retcode == CS_END_DATA || result->last_retcode == CS_END_RESULTS) {
  		return result->last_retcode;
  	}
  	
  	if (numrows!=-1) numrows+= result->num_rows;
  	while ((retcode=ct_fetch(result->sybase_ptr->cmd, CS_UNUSED, CS_UNUSED, CS_UNUSED, NULL))==CS_SUCCEED || retcode == CS_ROW_FAIL) {
  		result->num_rows++;
  		i= result->store ? result->num_rows- 1 : 0;
  		if (i >= result->blocks_initialized*SYBASE_ROWS_BLOCK) {
  			result->data = (zval **) safe_erealloc(result->data, SYBASE_ROWS_BLOCK*(++result->blocks_initialized), sizeof(zval *), 0);
  		}
  		if (result->store || 1 == result->num_rows) {
  			result->data[i] = (zval *) safe_emalloc(sizeof(zval), result->num_fields, 0);
  		}
  
  		for (j = 0; j < result->num_fields; j++) {
  
  			/* If we are in non-storing mode, free the previous result */
  			if (!result->store && result->num_rows > 1 && Z_TYPE(result->data[i][j]) == IS_STRING) {
  				efree(Z_STRVAL(result->data[i][j]));
  			}
  
  			if (result->indicators[j] == -1) { /* null value */
  				ZVAL_NULL(&result->data[i][j]);
  			} else {
  				switch (result->numerics[j]) {
  					case 1: {
  						/* This indicates a long */
  						ZVAL_LONG(&result->data[i][j], strtol(result->tmp_buffer[j], NULL, 10));
  						break;
  					}
  					
  					case 2: {
  						/* This indicates a float */
  						RETURN_DOUBLE_VAL(result->data[i][j], result->tmp_buffer[j], result->lengths[j]); 
  						break;
  					}
  
  					case 3: {
  						/* This indicates either a long or a float, which ever fits */
  						errno = 0;
  						Z_LVAL(result->data[i][j]) = strtol(result->tmp_buffer[j], NULL, 10);
  						if (errno == ERANGE) {
  						
  							/* An overflow occurred, so try to fit it into a double */
  							RETURN_DOUBLE_VAL(result->data[i][j], result->tmp_buffer[j], result->lengths[j]); 
  							break;
  						}
  						Z_TYPE(result->data[i][j]) = IS_LONG;
  						break;
  					}
  					
  					default: {
  						/* This indicates anything else, return it as string
  						 * FreeTDS doesn't correctly set result->indicators[j] correctly
  						 * for NULL fields in some version in conjunction with ASE 12.5
  						 * but instead sets result->lengths[j] to 0, which would lead to
  						 * a negative memory allocation (and thus a segfault).
  						 */
  						if (result->lengths[j] < 1) {
  							ZVAL_NULL(&result->data[i][j]);
  						} else {
  							ZVAL_STRINGL(&result->data[i][j], result->tmp_buffer[j], result->lengths[j]- 1, 1);
  						}
  						break;
  					}
  				}
  			}
  		}
  		if (numrows!=-1 && result->num_rows>=numrows) break;
  	}
  
  	if (retcode==CS_ROW_FAIL) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Error reading row %d", result->num_rows);
  		return retcode;
  	}
  	result->last_retcode= retcode;
  	switch (retcode) {
  		case CS_END_DATA:
  			retcode = php_sybase_finish_results(result TSRMLS_CC);
  			break;
  			
  		case CS_ROW_FAIL:
  		case CS_SUCCEED:
  			break;
  			
  		default:
  			FREE_SYBASE_RESULT(result);
  			result = NULL;
  			retcode = CS_FAIL;		/* Just to be sure */
  			break;
  	}
  	
  	return retcode;
  }
  
  static sybase_result * php_sybase_fetch_result_set(sybase_link *sybase_ptr, int buffered, int store TSRMLS_DC)
  {
  	int num_fields;
  	sybase_result *result;
  	int i, j;
  	CS_INT retcode;
  
  	/* The following (if unbuffered) is more or less the equivalent of mysql_store_result().
  	 * fetch all rows from the server into the row buffer, thus:
  	 * 1)  Being able to fire up another query without explicitly reading all rows
  	 * 2)  Having numrows accessible
  	 */
  	if (ct_res_info(sybase_ptr->cmd, CS_NUMDATA, &num_fields, CS_UNUSED, NULL)!=CS_SUCCEED) {
  		return NULL;
  	}
  	
  	result = (sybase_result *) emalloc(sizeof(sybase_result));
  	result->data = (zval **) safe_emalloc(sizeof(zval *), SYBASE_ROWS_BLOCK, 0);
  	result->fields = NULL;
  	result->sybase_ptr = sybase_ptr;
  	result->cur_field=result->cur_row=result->num_rows=0;
  	result->num_fields = num_fields;
  	result->last_retcode = 0;
  	result->store= store;
  	result->blocks_initialized= 1;
  	result->tmp_buffer = (char **) safe_emalloc(sizeof(char *), num_fields, 0);
  	result->lengths = (CS_INT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
  	result->indicators = (CS_SMALLINT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
  	result->datafmt = (CS_DATAFMT *) safe_emalloc(sizeof(CS_DATAFMT), num_fields, 0);
  	result->numerics = (unsigned char *) safe_emalloc(sizeof(unsigned char), num_fields, 0);
  	result->types = (CS_INT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
  	
  	for (i=0; i<num_fields; i++) {
  		ct_describe(sybase_ptr->cmd, i+1, &result->datafmt[i]);
  		result->types[i] = result->datafmt[i].datatype;
  		switch (result->datafmt[i].datatype) {
  			case CS_CHAR_TYPE:
  			case CS_VARCHAR_TYPE:
  			case CS_TEXT_TYPE:
  			case CS_IMAGE_TYPE:
  				result->datafmt[i].maxlength++;
  				result->numerics[i] = 0;
  				break;
  			case CS_BINARY_TYPE:
  			case CS_VARBINARY_TYPE:
  				result->datafmt[i].maxlength *= 2;
  				result->datafmt[i].maxlength++;
  				result->numerics[i] = 0;
  				break;
  			case CS_BIT_TYPE:
  			case CS_TINYINT_TYPE:
  				result->datafmt[i].maxlength = 4;
  				result->numerics[i] = 1;
  				break;
  			case CS_SMALLINT_TYPE:
  				result->datafmt[i].maxlength = 7;
  				result->numerics[i] = 1;
  				break;
  			case CS_INT_TYPE:
  				result->datafmt[i].maxlength = 12;
  				result->numerics[i] = 1;
  				break;
  			case CS_REAL_TYPE:
  			case CS_FLOAT_TYPE:
  				result->datafmt[i].maxlength = 24;
  				result->numerics[i] = 2;
  				break;
  			case CS_MONEY_TYPE:
  			case CS_MONEY4_TYPE:
  				result->datafmt[i].maxlength = 24;
  				result->numerics[i] = 2;
  				break;
  			case CS_DATETIME_TYPE:
  			case CS_DATETIME4_TYPE:
  				result->datafmt[i].maxlength = 30;
  				result->numerics[i] = 0;
  				break;
  			case CS_NUMERIC_TYPE:
  			case CS_DECIMAL_TYPE:
  				result->datafmt[i].maxlength = result->datafmt[i].precision + 3;
  				/* numeric(10) vs numeric(10, 1) */
  				result->numerics[i] = (result->datafmt[i].scale == 0) ? 3 : 2;
  				break;
  			default:
  				result->datafmt[i].maxlength++;
  				result->numerics[i] = 0;
  				break;
  		}
  		result->tmp_buffer[i] = (char *)emalloc(result->datafmt[i].maxlength);
  		result->datafmt[i].datatype = CS_CHAR_TYPE;
  		result->datafmt[i].format = CS_FMT_NULLTERM;
  		ct_bind(sybase_ptr->cmd, i+1, &result->datafmt[i], result->tmp_buffer[i], &result->lengths[i], &result->indicators[i]);
  	}
  
  	result->fields = (sybase_field *) safe_emalloc(sizeof(sybase_field), num_fields, 0);
  	j=0;
  	for (i=0; i<num_fields; i++) {
  		char computed_buf[16];
  
  		if (result->datafmt[i].namelen>0) {
  			result->fields[i].name = estrndup(result->datafmt[i].name, result->datafmt[i].namelen);
  		} else {
  			if (j>0) {
  				snprintf(computed_buf, 16, "computed%d", j);
  			} else {
  				strcpy(computed_buf, "computed");
  			}
  			result->fields[i].name = estrdup(computed_buf);
  			j++;
  		}
  		result->fields[i].column_source = STR_EMPTY_ALLOC();
  		result->fields[i].max_length = result->datafmt[i].maxlength-1;
  		result->fields[i].numeric = result->numerics[i];
  		Z_TYPE(result->fields[i]) = result->types[i];
  	}
  	
  	if (buffered) {
  		retcode = CS_SUCCEED;
  	} else {
  		if ((retcode = php_sybase_fetch_result_row(result, -1 TSRMLS_CC)) == CS_FAIL) {
  			return NULL;
  		}
  	}
  
  	result->last_retcode = retcode;
  	return result;
  }
  
  static void php_sybase_query (INTERNAL_FUNCTION_PARAMETERS, int buffered)
  {
  	zval *sybase_link_index = NULL;
  	zend_bool store = 1;
  	char *query;
  	int len, id, deadlock_count;
  	sybase_link *sybase_ptr;
  	sybase_result *result;
  	CS_INT restype;
  	CS_RETCODE retcode;
  	enum {
  		Q_RESULT,				/* Success with results. */
  		Q_SUCCESS,				/* Success but no results. */
  		Q_FAILURE,				/* Failure, no results. */
  	} status;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|rb", &query, &len, &sybase_link_index, &store) == FAILURE) {
  		return;
  	}
  
  	if (!store && !buffered) {
  		php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Cannot use non-storing mode with buffered queries");
  		store = 1;
  	}
  
  	if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
  		RETURN_FALSE;
  	}
  
  	ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
  
  	/* Fail if we already marked this connection dead. */
  	if (sybase_ptr->dead) {
  		RETURN_FALSE;
  	}
  	
  	/* Check to see if a previous sybase_unbuffered_query has read all rows */
  	if (sybase_ptr->active_result_index) {
  		zval *tmp = NULL;
  		
  		php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Called without first fetching all rows from a previous unbuffered query");
  		if (sybase_ptr->cmd) {
  			ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  		}
  		
  		/* Get the resultset and free it */
  		ALLOC_ZVAL(tmp);
  		Z_LVAL_P(tmp)= sybase_ptr->active_result_index;
  		Z_TYPE_P(tmp)= IS_RESOURCE;
  		INIT_PZVAL(tmp);
  		ZEND_FETCH_RESOURCE(result, sybase_result *, &tmp, -1, "Sybase result", le_result);
  		
  		if (result) {
  			php_sybase_finish_results(result TSRMLS_CC);
  		}
  		
  		zval_ptr_dtor(&tmp);
  		zend_list_delete(sybase_ptr->active_result_index);
  		sybase_ptr->active_result_index= 0;
  	}
  
  	/* Repeat until we don't deadlock. */
  	deadlock_count= 0;
  	for (;;) {
  		result = NULL;
  		sybase_ptr->deadlock = 0;
  		sybase_ptr->affected_rows = 0;
  
  		/* On Solaris 11.5, ct_command() can be moved outside the
  		 * loop, but not on Linux 11.0.
  		 */
  		if (ct_command(sybase_ptr->cmd, CS_LANG_CMD, query, CS_NULLTERM, CS_UNUSED)!=CS_SUCCEED) {
  			/* If this didn't work, the connection is screwed but
  			 * ct-lib might not set CS_CONSTAT_DEAD.  So set our own
  			 * flag.  This happens sometimes when the database is restarted
  			 * and/or its machine is rebooted, and ct_command() returns
  			 * CS_BUSY for some reason.
  			 */
  			sybase_ptr->dead = 1;
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Connection is dead");
  			RETURN_FALSE;
  		}
  
  		if (ct_send(sybase_ptr->cmd)!=CS_SUCCEED) {
  			ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  			sybase_ptr->dead = 1;
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot send command");
  			RETURN_FALSE;
  		}
  
  		/* Use the first result set or succeed/fail status and discard the
  		 * others.  Applications really shouldn't be making calls that
  		 * return multiple result sets, but if they do then we need to
  		 * properly read or cancel them or the connection will become
  		 * unusable.
  		 */
  		if (ct_results(sybase_ptr->cmd, &restype)!=CS_SUCCEED) {
  			ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  			sybase_ptr->dead = 1;
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot read results");
  			RETURN_FALSE;
  		}
  		switch ((int) restype) {
  			case CS_CMD_FAIL:
  			default:
  				status = Q_FAILURE;
  				break;
  			case CS_CMD_SUCCEED:
  			case CS_CMD_DONE: {
  					CS_INT row_count;
  					if (ct_res_info(sybase_ptr->cmd, CS_ROW_COUNT, &row_count, CS_UNUSED, NULL)==CS_SUCCEED) {
  						sybase_ptr->affected_rows = (long)row_count;
  					}
  				}
  				/* Fall through */
  			case CS_COMPUTEFMT_RESULT:
  			case CS_ROWFMT_RESULT:
  			case CS_DESCRIBE_RESULT:
  			case CS_MSG_RESULT:
  				buffered= 0;				/* These queries have no need for buffering */
  				status = Q_SUCCESS;
  				break;
  			case CS_COMPUTE_RESULT:
  			case CS_CURSOR_RESULT:
  			case CS_PARAM_RESULT:
  			case CS_ROW_RESULT:
  			case CS_STATUS_RESULT:
  				result = php_sybase_fetch_result_set(sybase_ptr, buffered, store TSRMLS_CC);
  				if (result == NULL) {
  					ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  					RETURN_FALSE;
  				}
  				status = Q_RESULT;
  				break;
  		}
  		
  		/* Check for left-over results */
  		if (!buffered && status != Q_RESULT) {
  			while ((retcode = ct_results(sybase_ptr->cmd, &restype))==CS_SUCCEED) {
  				switch ((int) restype) {
  					case CS_CMD_SUCCEED:
  					case CS_CMD_DONE:
  						break;
  
  					case CS_CMD_FAIL:
  						status = Q_FAILURE;
  						break;
  
  					case CS_COMPUTE_RESULT:
  					case CS_CURSOR_RESULT:
  					case CS_PARAM_RESULT:
  					case CS_ROW_RESULT:
  						if (status != Q_RESULT) {
  							result = php_sybase_fetch_result_set(sybase_ptr, buffered, store TSRMLS_CC);
  							if (result == NULL) {
  								ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  								sybase_ptr->dead = 1;
  								RETURN_FALSE;
  							}
  							status = Q_RESULT;
  							retcode = result->last_retcode; 
  						} else {
  							/* Unexpected results, cancel them. */
  							ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
  						}
  						break;
  					case CS_STATUS_RESULT:
  						/* Unexpected results, cancel them. */
  						ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
  						break;
  
  					default:
  						status = Q_FAILURE;
  						break;
  				}
  				if (status == Q_FAILURE) {
  					ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  				}
  				if (retcode == CS_END_RESULTS) {
  					break;
  				}
  			}
  			switch (retcode) {
  				case CS_END_RESULTS:
  					/* Normal. */
  					break;
  
  				case CS_FAIL:
  					/* Hopefully this either cleans up the connection, or the
  					 * connection ends up marked dead so it will be reopened
  					 * if it is persistent.  We may want to do
  					 * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
  					 * doc for ct_results()==CS_FAIL.
  					 */
  					ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
  					/* Don't take chances with the vagaries of ct-lib.  Mark it
  					 * dead ourselves.
  					 */
  					sybase_ptr->dead = 1;
  				case CS_CANCELED:
  				default:
  					status = Q_FAILURE;
  					break;
  			}
  		}
  
  		/* Retry deadlocks up until deadlock_retry_count times */		
  		if (sybase_ptr->deadlock && SybCtG(deadlock_retry_count) != -1 && ++deadlock_count > SybCtG(deadlock_retry_count)) {
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Retried deadlock %d times [max: %ld], giving up", deadlock_count- 1, SybCtG(deadlock_retry_count));
  			FREE_SYBASE_RESULT(result);
  			break;
  		}
  
  		/* If query completed without deadlock, break out of the loop.
  		 * Sometimes deadlock results in failures and sometimes not,
  		 * it seems to depend on the server flavor.  But we want to
  		 * retry all deadlocks.
  		 */
  		if (sybase_ptr->dead || sybase_ptr->deadlock == 0) {
  			break;
  		}
  
  		/* Get rid of any results we may have fetched.  This happens:
  		 * e.g., our result set may be a stored procedure status which
  		 * is returned even if the stored procedure deadlocks.  As an
  		 * optimization, we could try not to fetch results in known
  		 * deadlock conditions, but deadlock is (should be) rare.
  		 */
  		FREE_SYBASE_RESULT(result);
  	}
  
  	if (status == Q_SUCCESS) {
  		RETURN_TRUE;
  	}
  
  	if (status == Q_FAILURE) {
  		FREE_SYBASE_RESULT(result);
  		RETURN_FALSE;
  	}
  
  	/* Indicate we have data in case of buffered queries */
  	id= ZEND_REGISTER_RESOURCE(return_value, result, le_result);
  	sybase_ptr->active_result_index= buffered ? id : 0;
  }
  
  /* {{{ proto int sybase_query(string query [, resource link_id])
     Send Sybase query */
  PHP_FUNCTION(sybase_query)
  {
  	php_sybase_query(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
  }
  /* }}} */
  
  /* {{{ proto int sybase_unbuffered_query(string query [, resource link_id])
     Send Sybase query */
  PHP_FUNCTION(sybase_unbuffered_query)
  {
  	php_sybase_query(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
  }
  
  /* {{{ proto bool sybase_free_result(resource result)
     Free result memory */
  PHP_FUNCTION(sybase_free_result)
  {
  	zval *sybase_result_index = NULL;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  	
  	/* Did we fetch up until the end? */
  	if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
  		/* php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  canceling the rest of the results"); */
  		ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
  		php_sybase_finish_results(result TSRMLS_CC);
  	}
  	
  	zend_list_delete(Z_LVAL_P(sybase_result_index));
  	RETURN_TRUE;
  }
  
  /* }}} */
  
  /* {{{ proto string sybase_get_last_message(void)
     Returns the last message from server (over min_message_severity) */
  PHP_FUNCTION(sybase_get_last_message)
  {
  	RETURN_STRING(SybCtG(server_message), 1);
  }
  /* }}} */
  
  /* {{{ proto int sybase_num_rows(resource result)
     Get number of rows in result */
  PHP_FUNCTION(sybase_num_rows)
  {
  	zval *sybase_result_index = NULL;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	Z_LVAL_P(return_value) = result->num_rows;
  	Z_TYPE_P(return_value) = IS_LONG;
  }
  
  /* }}} */
  
  /* {{{ proto int sybase_num_fields(resource result)
     Get number of fields in result */
  PHP_FUNCTION(sybase_num_fields)
  {
  	zval *sybase_result_index = NULL;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	Z_LVAL_P(return_value) = result->num_fields;
  	Z_TYPE_P(return_value) = IS_LONG;
  }
  
  /* }}} */
  
  /* {{{ proto array sybase_fetch_row(resource result)
     Get row as enumerated array */
  PHP_FUNCTION(sybase_fetch_row)
  {
  	zval *sybase_result_index = NULL;
  	int i;
  	sybase_result *result;
  	zval *field_content;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	/* Unbuffered? */
  	if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
  		php_sybase_fetch_result_row(result, 1 TSRMLS_CC);
  	}
  	
  	/* At the end? */
  	if (result->cur_row >= result->num_rows) {
  		RETURN_FALSE;
  	}
  
  	array_init(return_value);
  	for (i=0; i<result->num_fields; i++) {
  		ALLOC_ZVAL(field_content);
  		*field_content = result->data[result->store ? result->cur_row : 0][i];
  		INIT_PZVAL(field_content);
  		zval_copy_ctor(field_content);
  		zend_hash_index_update(Z_ARRVAL_P(return_value), i, (void *) &field_content, sizeof(zval* ), NULL);
  	}
  	result->cur_row++;
  }
  
  /* }}} */
  
  static void php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int numerics)
  {
  	zval *sybase_result_index = NULL;
  	sybase_result *result;
  	int i, j;
  	zval *tmp;
  	char name[32];
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	/* Unbuffered ? Fetch next row */
  	if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
  		php_sybase_fetch_result_row(result, 1 TSRMLS_CC);
  	}
  
  	/* At the end? */
  	if (result->cur_row >= result->num_rows) {
  		RETURN_FALSE;
  	}
  
  	array_init(return_value);
  	
  	j= 1;
  	for (i=0; i<result->num_fields; i++) {
  		ALLOC_ZVAL(tmp);
  		*tmp = result->data[result->store ? result->cur_row : 0][i];
  		INIT_PZVAL(tmp);
  		zval_copy_ctor(tmp);
  		if (numerics) {
  			zend_hash_index_update(Z_ARRVAL_P(return_value), i, (void *) &tmp, sizeof(zval *), NULL);
  			Z_ADDREF_P(tmp);
  		}
  		
  		if (zend_hash_exists(Z_ARRVAL_P(return_value), result->fields[i].name, strlen(result->fields[i].name)+1)) {
  			snprintf(name, 32, "%s%d", result->fields[i].name, j);
  			result->fields[i].name= estrdup(name);
  			j++;
  		}
  		zend_hash_update(Z_ARRVAL_P(return_value), result->fields[i].name, strlen(result->fields[i].name)+1, (void *) &tmp, sizeof(zval *), NULL);
  	}
  	result->cur_row++;
  }
  
  
  /* {{{ proto object sybase_fetch_object(resource result [, mixed object])
     Fetch row as object */
  PHP_FUNCTION(sybase_fetch_object)
  {
  	zval *object = NULL;
  	zval *sybase_result_index = NULL;
  	zend_class_entry *ce = NULL;
  	sybase_result *result;
  	
  	/* Was a second parameter given? */
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|z", &sybase_result_index, &object) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	ce = ZEND_STANDARD_CLASS_DEF_PTR;
  	if (NULL != object) {		
  		switch (Z_TYPE_P(object)) {
  			case IS_OBJECT: {
  				ce = Z_OBJCE_P(object);
  				break;
  			}
  
  			case IS_NULL: {
  				/* Use default (ZEND_STANDARD_CLASS_DEF_PTR) */
  				break;
  			}
  
  			default: {
  				zend_class_entry **pce = NULL;
  				convert_to_string(object);
  
  				if (zend_lookup_class(Z_STRVAL_P(object), Z_STRLEN_P(object), &pce TSRMLS_CC) == FAILURE) {
  					php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Class %s has not been declared", Z_STRVAL_P(object));
  					/* Use default (ZEND_STANDARD_CLASS_DEF_PTR) */
  				} else {
  					ce = *pce;
  				}
  			}
  		}
  	}
  
  	/* Reset no. of arguments to 1 so that we can use INTERNAL_FUNCTION_PARAM_PASSTHRU */
  	ht= 1;
  	php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
  	if (Z_TYPE_P(return_value) == IS_ARRAY) {
  		object_and_properties_init(return_value, ce, Z_ARRVAL_P(return_value));
  	}
  }
  /* }}} */
  
  /* {{{ proto array sybase_fetch_array(resource result)
     Fetch row as array */
  PHP_FUNCTION(sybase_fetch_array)
  {
  	php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
  }
  /* }}} */
  
  /* {{{ proto array sybase_fetch_assoc(resource result)
     Fetch row as array without numberic indices */
  PHP_FUNCTION(sybase_fetch_assoc)
  {
  	php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
  }
  /* }}} */
  
  /* {{{ proto bool sybase_data_seek(resource result, int offset)
     Move internal row pointer */
  PHP_FUNCTION(sybase_data_seek)
  {
  	zval *sybase_result_index = NULL;
  	long offset;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &sybase_result_index, &offset) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	/* Unbuffered ? */
  	if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS && offset >= result->num_rows) {
  		php_sybase_fetch_result_row(result, offset+ 1 TSRMLS_CC);
  	}
  	
  	if (offset < 0 || offset >= result->num_rows) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad row offset %ld, must be betweem 0 and %d", offset, result->num_rows - 1);
  		RETURN_FALSE;
  	}
  
  	result->cur_row = offset;
  	RETURN_TRUE;
  }
  /* }}} */
  
  static char *php_sybase_get_field_name(CS_INT type)
  {
  	switch (type) {
  		case CS_CHAR_TYPE:
  		case CS_VARCHAR_TYPE:
  		case CS_TEXT_TYPE:
  			return "string";
  			break;
  		case CS_IMAGE_TYPE:
  			return "image";
  			break;
  		case CS_BINARY_TYPE:
  		case CS_VARBINARY_TYPE:
  			return "blob";
  			break;
  		case CS_BIT_TYPE:
  			return "bit";
  			break;
  		case CS_TINYINT_TYPE:
  		case CS_SMALLINT_TYPE:
  		case CS_INT_TYPE:
  			return "int";
  			break;
  		case CS_REAL_TYPE:
  		case CS_FLOAT_TYPE:
  		case CS_NUMERIC_TYPE:
  		case CS_DECIMAL_TYPE:
  			return "real";
  			break;
  		case CS_MONEY_TYPE:
  		case CS_MONEY4_TYPE:
  			return "money";
  			break;
  		case CS_DATETIME_TYPE:
  		case CS_DATETIME4_TYPE:
  			return "datetime";
  			break;
  		default:
  			return "unknown";
  			break;
  	}
  }
  
  
  /* {{{ proto object sybase_fetch_field(resource result [, int offset])
     Get field information */
  PHP_FUNCTION(sybase_fetch_field)
  {
  	zval *sybase_result_index = NULL;
  	long field_offset = -1;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|l", &sybase_result_index, &field_offset) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	if (field_offset == -1) {
  		field_offset = result->cur_field;
  		result->cur_field++;
  	}
  
  	if (field_offset < 0 || field_offset >= result->num_fields) {
  		if (ZEND_NUM_ARGS() == 2) { /* field specified explicitly */
  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset");
  		}
  		RETURN_FALSE;
  	}
  
  	object_init(return_value);
  
  	add_property_string(return_value, "name", result->fields[field_offset].name, 1);
  	add_property_long(return_value, "max_length", result->fields[field_offset].max_length);
  	add_property_string(return_value, "column_source", result->fields[field_offset].column_source, 1);
  	add_property_long(return_value, "numeric", result->fields[field_offset].numeric);
  	add_property_string(return_value, "type", php_sybase_get_field_name(Z_TYPE(result->fields[field_offset])), 1);
  }
  /* }}} */
  
  
  /* {{{ proto bool sybase_field_seek(resource result, int offset)
     Set field offset */
  PHP_FUNCTION(sybase_field_seek)
  {
  	zval *sybase_result_index = NULL;
  	long field_offset;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &sybase_result_index, &field_offset) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  
  	if (field_offset < 0 || field_offset >= result->num_fields) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset");
  		RETURN_FALSE;
  	}
  
  	result->cur_field = field_offset;
  	RETURN_TRUE;
  }
  /* }}} */
  
  
  /* {{{ proto string sybase_result(resource result, int row, mixed field)
     Get result data */
  PHP_FUNCTION(sybase_result)
  {
  	zval *field;
  	zval *sybase_result_index = NULL;
  	long row;
  	int field_offset = 0;
  	sybase_result *result;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rlz", &sybase_result_index, &row, &field) == FAILURE) {
  		return;
  	}
  	ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
  	
  	/* Unbuffered ? */
  	if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS && row >= result->num_rows) {
  		php_sybase_fetch_result_row(result, row TSRMLS_CC);
  	}
  
  	if (row < 0 || row >= result->num_rows) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad row offset (%ld)", row);
  		RETURN_FALSE;
  	}
  
  	switch(Z_TYPE_P(field)) {
  		case IS_STRING: {
  			int i;
  
  			for (i = 0; i < result->num_fields; i++) {
  				if (strcasecmp(result->fields[i].name, Z_STRVAL_P(field)) == 0) {
  					field_offset = i;
  					break;
  				}
  			}
  			if (i >= result->num_fields) { /* no match found */
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  %s field not found in result", Z_STRVAL_P(field));
  				RETURN_FALSE;
  			}
  			break;
  		}
  		default:
  			convert_to_long(field);
  			field_offset = Z_LVAL_P(field);
  			if (field_offset < 0 || field_offset >= result->num_fields) {
  				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset specified");
  				RETURN_FALSE;
  			}
  			break;
  	}
  
  	*return_value = result->data[row][field_offset];
  	zval_copy_ctor(return_value);
  }
  /* }}} */
  
  
  /* {{{ proto int sybase_affected_rows([resource link_id])
     Get number of affected rows in last query */
  PHP_FUNCTION(sybase_affected_rows)
  {
  	zval *sybase_link_index = NULL;
  	sybase_link *sybase_ptr;
  	int id;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &sybase_link_index) == FAILURE) {
  		return;
  	}
  
  	if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
  		RETURN_FALSE;
  	}
  
  	ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
  
  	Z_LVAL_P(return_value) = sybase_ptr->affected_rows;
  	Z_TYPE_P(return_value) = IS_LONG;
  }
  /* }}} */
  
  
  PHP_MINFO_FUNCTION(sybase)
  {
  	char buf[32];
  
  	php_info_print_table_start();
  	php_info_print_table_header(2, "Sybase_CT Support", "enabled" );
  	snprintf(buf, sizeof(buf), "%ld", SybCtG(num_persistent));
  	php_info_print_table_row(2, "Active Persistent Links", buf);
  	snprintf(buf, sizeof(buf), "%ld", SybCtG(num_links));
  	php_info_print_table_row(2, "Active Links", buf);
  	snprintf(buf, sizeof(buf), "%ld", SybCtG(min_server_severity));
  	php_info_print_table_row(2, "Min server severity", buf);
  	snprintf(buf, sizeof(buf), "%ld", SybCtG(min_client_severity));
  	php_info_print_table_row(2, "Min client severity", buf);	
  	php_info_print_table_row(2, "Application Name", SybCtG(appname));
  	snprintf(buf, sizeof(buf), "%ld", SybCtG(deadlock_retry_count));
  	php_info_print_table_row(2, "Deadlock retry count", buf);
  	php_info_print_table_end();
  
  	DISPLAY_INI_ENTRIES();
  }
  
  
  /* {{{ proto void sybase_min_client_severity(int severity)
     Sets minimum client severity */
  PHP_FUNCTION(sybase_min_client_severity)
  {
  	long severity;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &severity) == FAILURE) {
  		return;
  	}
  	
  	SybCtG(min_client_severity) = severity;
  }
  /* }}} */
  
  
  /* {{{ proto void sybase_min_server_severity(int severity)
     Sets minimum server severity */
  PHP_FUNCTION(sybase_min_server_severity)
  {
  	long severity;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &severity) == FAILURE) {
  		return;
  	}
  	
  	SybCtG(min_server_severity) = severity;
  }
  /* }}} */
  
  /* {{{ proto void sybase_deadlock_retry_count(int retry_count)
     Sets deadlock retry count */
  PHP_FUNCTION(sybase_deadlock_retry_count)
  {
  	long retry_count;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &retry_count) == FAILURE) {
  		return;
  	}
  	
  	SybCtG(deadlock_retry_count) = retry_count;
  }
  /* }}} */
  
  
  /* {{{ proto bool sybase_set_message_handler(mixed error_func [, resource connection])
     Set the error handler, to be called when a server message is raised. 
     If error_func is NULL the handler will be deleted */
  PHP_FUNCTION(sybase_set_message_handler)
  {
  	zend_fcall_info fci = empty_fcall_info;
  	zend_fcall_info_cache cache = empty_fcall_info_cache;
  	zval *sybase_link_index= NULL;
  	sybase_link *sybase_ptr;
  	zval **callback;
  	int id;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "f!|r", &fci, &cache, &sybase_link_index) == FAILURE) {
  		return;
  	}
  
  	if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
  
  		/* Doesn't matter if we're not connected yet, use default */
  		callback= &SybCtG(callback_name);
  	} else if (-1 == id) {
  
  		/* Connection-based message handler */
  		ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
  		callback= &sybase_ptr->callback_name;
  	} else {
  
  		/* Default message handler */
  		callback= &SybCtG(callback_name);
  	}
  
  	/* Clean old callback */
  	if (*callback) {
  		zval_ptr_dtor(callback);
  		*callback = NULL;
  	}
  
  	if (ZEND_FCI_INITIALIZED(fci)) {
  		ALLOC_ZVAL(*callback);
  		**callback = *fci.function_name;
  		INIT_PZVAL(*callback);
  		zval_copy_ctor(*callback);
  	} else {
  		callback= NULL;
  	}
  
  	RETURN_TRUE;
  }
  /* }}} */
  
  
  #endif
  
  /*
   * Local variables:
   * tab-width: 4
   * c-basic-offset: 4
   * End:
   */
  