message: PHPAPI: fixed Array::exists error.
diff: @@ -584,9 +584,11 @@ public:
  }
  bool exists(const char *key)
  {
  - String _key(key);
  - bool ret = zend_hash_exists(Z_ARRVAL_P(ptr()), _key.ptr()) == SUCCESS;
  - return ret;
  + return zend_hash_str_exists(Z_ARRVAL_P(ptr()), key, strlen(key));
  + }
  + bool exists(string &key)
  + {
  + return zend_hash_str_exists(Z_ARRVAL_P(ptr()), key.c_str(), key.length());
  }
  ArrayIterator begin()
  {
  