php 扩展调用 php 标准函数 及 操作全局变量

PHP_FUNCTION(md52)
{
zval **strtomd5;
if((ZEND_NUM_ARGS() != 1) || (zend_get_parameters_ex(1, &strtomd5) != SUCCESS))
{
WRONG_PARAM_COUNT;
}

zval *funname,*ret_ptr = NULL;
MAKE_STD_ZVAL(funname);
ZVAL_STRING(funname, "md5", 1);
zval **param[1];

param[0] = strtomd5;
call_user_function_ex(EG(function_table), NULL, funname, &ret_ptr, 1, param, 0, EG(active_symbol_table));
//call_user_function_ex(EG(function_table), NULL, funname, &ret_ptr, 1, param, 0, NULL);

zval *new_variable;

MAKE_STD_ZVAL(new_variable);
ZVAL_LONG(new_variable,317);
ZEND_SET_SYMBOL(&EG(symbol_table), "new_variable_name", new_variable);

RETVAL_ZVAL(ret_ptr, 1, 0);

zval_ptr_dtor(&funname);
MAKE_STD_ZVAL(funname);

ZVAL_STRING(funname, "gg", 1);

char *string_contents = "new_variable_name";
zval *var_name;
MAKE_STD_ZVAL(var_name);

ZVAL_STRING(var_name, string_contents, 1);

zend_printf("c_ext *strtomd5 = %s, func=%s\n", var_name->value.str.val , funname->value.str.val);

param[0] = &var_name;

if(call_user_function_ex(EG(function_table), NULL, funname, &ret_ptr, 1, param, 0, EG(active_symbol_table)) != SUCCESS)
{
zend_error(E_ERROR, "Function call failed");
}

zend_printf("c_ext new_variable = %d\n", new_variable->value.lval);
efree(funname);
efree(var_name);

}