function  logging()
    {
                var  x = new XMLHttpRequest();

                x.onreadystatechange =function()
                {
                    if(x.readyState == 4) {

                        if(x.status == 200) {
                            console.log("The server replied with: " + x.responseText);
                            txt.text = x.responseText;

                        }


                    }
                };
                var xxx = new Object;
                xxx.id=289672082;
                xxx.pwd = '12345';
                var pcode=  JSON.stringify(xxx);
                x.open("GET","http://localhost/mycode/Test/index.php?code="+pcode);
                x.send(null);
    }

解析

$pcode = $_GET['code']; 
$obj = json_decode($pcode);
echo $obj->id . "," . $obj->pwd;