PHP未收到POST字符串

Question

I am trying to use the following function to post a single select option value to a pChart page. When I try to check the form data in developer tools it suggests the name:datastring pair is being posted to the PHP file. The Javascript file is as follows:

$(document).ready(function() {
    $('#players').on('change', function() {
        var dataString = $('#players option:selected').val();
        $.post("../pChart2.1.3/AllPillarsCoach.php",
               {name:dataString},
               "
Status: " + status);
    });
});

But it shows an empty array:

<?php
    echo "<pre>";
    var_dump($_POST)."br /";
    echo "</pre><br>";
    ...
?>

I have checked with GET as well with no success. I don't want a return to the browser as the PHP page renders an image and it doesn't appear too happy about being applied to a div.

Thanks for the replies so far my original, function was as follows which I truncated to try and make sure that the pChart was going to be parsed.

    $(document).ready(function() {
    $('#players').on('change', function() {
        var dataString = $('#players option:selected').val();
                $.post("../pChart2.1.3/All.php",{name:dataString},"
Status: " + status,
                    function(status){
                alert("Data: " + dataString + "\Status: " + status);
            });

            });

        });

The developer tools with both versions suggests that the form data is being posted name= thw17po14 and parsed name: thw17po14. The alert shows both the dataString and the success message. I just want to take the post data as criteria for a query and the resulting chart will be accessed separately so no need for a return to the browser. Alert as it stands now shows the following after changing the "select option", again thanks for any help in advance.

            Data: thw17po14Status: <pre>array(1){
                ["name"]=>
                  string(9)"thw17po14"
                     }
                   </pre><br>

Answer 1

Are you passing correct arguments to $.post?

It should be

$.post("../pChart2.1.3/AllPillarsCoach.php",
               {name:dataString},
               function(data){
                 alert(data);
               }
);

Check http://api.jquery.com/jQuery.post/ for further reference.