Using jQuery/Ajax with PHP to display current progress

Question

Short and sweet: Looking for a way to call PHP file and display the progress using jQuery and/or Ajax. PHP file upgrade.php?step=1 is called and then the o

Answer 1

Everyone thank you for your input, with help from some of the guys in the Freenode #jQuery we were able to come up with this which works perfectly:

var numSteps = 2;
function loadStepAjax(s) {
    $.ajax('upgrade.php', {
        type: 'GET',
        dataType: 'html',
        data: {
           step: s
        },
        success: function(data) {
            $('#upgradestatus').append(data);
            if (s < numSteps)
                loadStepAjax(s+1);
            }
     });
}

You then call the function:

loadStepAjax(1);

Instead of using a FOR loop we created a function loadStepAjax and then used an IF statement on the callback to determine whether to call the function again.

It's always something simple isn't it! Thanks for everyone's input though, it is greatly appreciated.