检查php文件是否已加载

我得到了一个简单的jquery函数，它应该从数据库中删除一行，我的脚本是：

//

// delete the entry once we have confirmed that it should be deleted
$('.delete').click(function() {
    var parent = $(this).closest('tr');

    $.ajax({
        type: 'get',
        url: 'delete.php', // <- replace this with your url here
        data: 'ajax=1&delete=' + $(this).attr('id'),
        beforeSend: function() {
            parent.animate({'backgroundColor':'#fb6c6c'},300);
        },
        success: function() {
            parent.fadeOut(300,function() {
                parent.remove();
            });
        }
    });        
});
// confirm that it should be deleted
$('.delete').confirm({
    msg:'Do you really want to delete this?',
    timeout:3000
});     }); // ]]></script>

当我点击bitton-dalete行（在屏幕上），但在数据库中它仍然存在，如何检查php是否被执行？我的php文件：

> <?php     $con = mysql_connect("localhost","root",""); if (!$con)   {  
> die('Could not connect: ' . mysql_error());   }
> 
> mysql_select_db("xxx", $con);
> $sql="DELETE FROM
> `submission_values` WHERE  SubmissionId =49";   
> mysql_query($sql,$con);
> 
> ?>

如果它在同一个文件夹中，我应该给出什么url？只有像上面这样的名字？这样行吗？（在delete.php中）

echo（"alert（'ok'）；"）；