试图让jquery .ajax识别我的PHP JSON

Calling :

致电：

 $.ajax({
        type: "POST",
        url: 'https://blahblah/cow.php',
        contentType: "application/json",
        data: {
            'guid': '111',
            'score': 592,
            'initials': 'tod'
        },
        success: function (data) {

            try {
                //alert(data + " -- " + data.length);
                if (data.length > 0) {
 $.ajax({
        type: "POST