zend_is_callable_ex ... &reftitle.description; #include <zend_API.h> zend_boolzend_is_callable_ex zval*callable uintcheck_flags zval*callable_name zend_class_entry**ce_ptr zend_function**fptr_ptr zval***zobj_ptr_ptr magicTSRMLS_DC ... &reftitle.parameters; callable ... check_flags ... callable_name ... ce_ptr ... fptr_ptr ... zobj_ptr_ptr ... TSRMLS_DC ... &reftitle.returnvalues; ...