message: revemo swoole_mysql->getBuffer
diff: @@ -33,7 +33,6 @@ static PHP_METHOD(swoole_mysql, escape);
  static PHP_METHOD(swoole_mysql, query);
  static PHP_METHOD(swoole_mysql, close);
  static PHP_METHOD(swoole_mysql, on);
  -static PHP_METHOD(swoole_mysql, getBuffer);
  static zend_class_entry swoole_mysql_ce;
  static zend_class_entry *swoole_mysql_class_entry_ptr;
  @@ -291,7 +290,6 @@ static const zend_function_entry swoole_mysql_methods[] =
  PHP_ME(swoole_mysql, escape, arginfo_swoole_mysql_escape, ZEND_ACC_PUBLIC)
  #endif
  PHP_ME(swoole_mysql, query, arginfo_swoole_mysql_query, ZEND_ACC_PUBLIC)
  - PHP_ME(swoole_mysql, getBuffer, arginfo_swoole_void, ZEND_ACC_PUBLIC)
  PHP_ME(swoole_mysql, close, arginfo_swoole_void, ZEND_ACC_PUBLIC)
  PHP_ME(swoole_mysql, on, arginfo_swoole_mysql_on, ZEND_ACC_PUBLIC)
  PHP_FE_END
  @@ -1439,19 +1437,6 @@ static int swoole_mysql_onRead(swReactor *reactor, swEvent *event)
  return SW_OK;
  }
  -static PHP_METHOD(swoole_mysql, getBuffer)
  -{
  -
  - mysql_client *client = swoole_get_object(getThis());
  - if (!client)
  - {
  - swoole_php_fatal_error(E_WARNING, "object is not instanceof swoole_mysql.");
  - RETURN_FALSE;
  - }
  -
  - SW_RETURN_STRINGL(client->buffer->str, client->buffer->length, 1);//TODO zero malloc
  -}
  -
  #ifdef SW_USE_MYSQLND
  static PHP_METHOD(swoole_mysql, escape)
  {
  