private function _extractKey()
    {
        $key      = null;
        $firstPos = $this->_pos;
        $ch       = $this->_value[$this->_pos];

        if ($ch == '"' || $ch == '\'') {
            $this->_pos++;
            $key = $this->_extractString($ch);
        } elseif ($ch == ';' || $ch == '=') {
            // Key name was expected.
            throw $this->_createException(
                $firstPos,
                Resources::ERROR_CONNECTION_STRING_MISSING_KEY
            );
        } else {
            while ($this->_pos < strlen($this->_value)) {
                $ch = $this->_value[$this->_pos];

                // At this point we've read the key, break.
                if ($ch == '=') {
                    break;
                }

                $this->_pos++;
            }
            $key = rtrim(substr($this->_value, $firstPos, $this->_pos - $firstPos));
        }

        if (strlen($key) == 0) {
            // Empty key name.
            throw $this->_createException(
                $firstPos,
                Resources::ERROR_CONNECTION_STRING_EMPTY_KEY
            );
        }

        return $key;
    }
private function _extractKey()
    {
        $key      = null;
        $firstPos = $this->_pos;
        $ch       = $this->_value[$this->_pos];

        if ($ch == '"' || $ch == '\'') {
            $this->_pos++;
            $key = $this->_extractString($ch);
        } elseif ($ch == ';' || $ch == '=') {
            // Key name was expected.
            throw $this->_createException(
                $firstPos,
                Resources::ERROR_CONNECTION_STRING_MISSING_KEY
            );
        } else {
            while ($this->_pos < strlen($this->_value)) {
                $ch = $this->_value[$this->_pos];

                // At this point we've read the key, break.
                if ($ch == '=') {
                    break;
                }

                $this->_pos++;
            }
            $key = rtrim(substr($this->_value, $firstPos, $this->_pos - $firstPos));
        }

        if (strlen($key) == 0) {
            // Empty key name.
            throw $this->_createException(
                $firstPos,
                Resources::ERROR_CONNECTION_STRING_EMPTY_KEY
            );
        }

        return $key;
    }
private function _extractKey ( ) { $ key = null ; $ firstPos = $ this -> _pos ; $ ch = $ this -> _value [ $ this -> _pos ] ; if ( $ ch == '"' || $ ch == '\'' ) { $ this -> _pos ++ ; $ key = $ this -> _extractString ( $ ch ) ; } elseif ( $ ch == ';' || $ ch == '=' ) { // Key name was expected. throw $ this -> _createException ( $ firstPos , Resources :: ERROR_CONNECTION_STRING_MISSING_KEY ) ; } else { while ( $ this -> _pos < strlen ( $ this -> _value ) ) { $ ch = $ this -> _value [ $ this -> _pos ] ; // At this point we've read the key, break. if ( $ ch == '=' ) { break ; } $ this -> _pos ++ ; } $ key = rtrim ( substr ( $ this -> _value , $ firstPos , $ this -> _pos - $ firstPos ) ) ; } if ( strlen ( $ key ) == 0 ) { // Empty key name. throw $ this -> _createException ( $ firstPos , Resources :: ERROR_CONNECTION_STRING_EMPTY_KEY ) ; } return $ key ; }
Extracts key at the current position.

@return string
Extracts key at the current position .