check_liveness    313 ext/pdo/pdo_dbh.c 					if (pdbh->methods->check_liveness && FAILURE == (pdbh->methods->check_liveness)(pdbh TSRMLS_CC)) {
check_liveness    320 ext/pdo/php_pdo_driver.h 	pdo_dbh_check_liveness_func	check_liveness;