#include <zend_API.h>
int call_user_function ( HashTable* function_table, zval** object_pp, zval* function_name, zval* retval_ptr, zend_uint param_count, zval* params[], magic TSRMLS_DC )...
function_table...
object_pp...
function_name...
retval_ptr...
param_count...
params[]...
TSRMLS_DC...