Ajax request to self-page not working

I have a php page with the follow javascript code in it:

$("#saveButton").click(function() {
                HLalert('Saving...');
                $.getJSON("<?php echo $PHP_SELF; ?>", {
                    ajax: 1,
                    classes: $("#alllessons").serialize()
                }, function(output) {
                    if (output.status == false) { HLalert(output.message); }
                    else { HLalert('Saved!.'); }
                });
            });

For whatever real it does not work. The javascript before and after it exectute but these seemingly does not. Not even a failed status is returned.

HLalert() is a function that displays a twitter like alert message.

At the top of the php page I have the code

<?php
    if ($_GET['ajax'] == 1) {
        // parse the ajax values
        // output json and die
    }
    // regular page code

I tried changing the names of the passed values in the getJSON call, that doesn't do anything. I've tried putting the page the getJSON calls into a different file and that doesn't do anything either.

Is there something fundamentally wrong with my getJSON code that I just cannot see? Are you allowed to make $.ajax calls to your self-page?

Tha开发者_开发知识库nks

do you mean $_SERVER['PHP_SELF'] ? I am not really sure if there is a $PHP_SELF.

do you mean document.location ? ;-) No need for PHP here.

$PHP_SELF does not exist unless you have defined it.

Do you perhaps mean $_SERVER['PHP_SELF']?

Edit: .serialize() returns a string without quotes and I think the values of your key - value pairs do need to be quoted so perhaps it should be something like:

after the first alert:

var values = '"' + $("#alllessons").serialize() + '"';

and later:

ajax: 1,
classes: values