Z_ISNULL          504 Zend/zend_types.h #define Z_ISNULL_P(zval_p)			Z_ISNULL(*(zval_p))
Z_ISNULL         1340 ext/mbstring/php_mbregex.c 	if (!Z_ISNULL(MBREX(search_str))) {
Z_ISNULL          287 ext/session/php_session.h 	if (!Z_ISNULL(PS(http_session_vars))) {							\
Z_ISNULL         2119 ext/sqlite3/sqlite3.c 	if (!Z_ISNULL(intern->stmt_obj_zval)) {
Z_ISNULL         2190 ext/sqlite3/sqlite3.c 	if (!Z_ISNULL(param->parameter)) {