zend_ptr_stack 225 Zend/zend_globals.h zend_ptr_stack user_error_handlers; zend_ptr_stack 226 Zend/zend_globals.h zend_ptr_stack user_exception_handlers; zend_ptr_stack 295 Zend/zend_globals.h zend_ptr_stack heredoc_label_stack; zend_ptr_stack 34 Zend/zend_language_scanner.h zend_ptr_stack heredoc_label_stack; zend_ptr_stack 163 ext/mysqli/php_mysqli_structs.h zend_ptr_stack free_links;