dom_documenttype_system_id_read   72 ext/dom/dom_properties.h int dom_documenttype_system_id_read(dom_object *obj, zval **retval TSRMLS_DC);
dom_documenttype_system_id_read  757 ext/dom/php_dom.c 	dom_register_prop_handler(&dom_documenttype_prop_handlers, "systemId", dom_documenttype_system_id_read, NULL TSRMLS_CC);