wpdb::_real_escape( string $data ): string

1272	public function _real_escape( $data ) {1273		if ( ! is_scalar( $data ) ) {1274			return '';1275		}1276 1277		if ( $this->dbh ) {1278			$escaped = mysqli_real_escape_string( $this->dbh, $data );1279		} else {1280			$class = get_class( $this );1281 1282			wp_load_translations_early();1283			/* translators: %s: Database access abstraction class, usually wpdb or a class extending wpdb. */1284			_doing_it_wrong( $class, sprintf( __( '%s must set a database connection for use with escaping.' ), $class ), '3.6.0' );1285 1286			$escaped = addslashes( $data );1287		}1288 1289		return $this->add_placeholder_escape( $escaped );1290	}