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);
	
}

<?php

echo md52('123qwe');

?>