php_libxml_register_export  906 ext/dom/php_dom.c 	php_libxml_register_export(dom_node_class_entry, php_dom_export_node);
php_libxml_register_export  101 ext/libxml/php_libxml.h PHP_LIBXML_API zval *php_libxml_register_export(zend_class_entry *ce, php_libxml_export_node export_function);
php_libxml_register_export 2724 ext/simplexml/simplexml.c 	php_libxml_register_export(sxe_class_entry, simplexml_export_node);