api_version       177 ext/pdo/pdo.c  	if (driver->api_version != PDO_DRIVER_API) {
api_version       179 ext/pdo/pdo.c  			driver->driver_name, driver->api_version, PDO_DRIVER_API);
api_version       222 ext/pdo/php_pdo_driver.h 	zend_ulong	api_version; /* needs to be compatible with PDO */