Run a PHP function via Jquery onclick event

You are looking for jQuery's Ajax functions.

You can't "run" a PHP command from within JavaScript, but you can make an asychronous call to another PHP script without changing the page.

Yes it is possible. Just do $.get with jquery and call the php page. Does that make sense?

If by "not through a POST" you mean "without an AJAX call to a PHP page on my server" then no, it's not possible. If you mean "without a POST" then yes, you can use a GET. :)

You would have to use either POST or GET to pass HTML data from the page to a php function. You cannot call a PHP function directly from javascript. Does your PHP function only utilize the GET parameter to retrieve data?

You can use the jQuery ajax function for either:

var formData = $('#formName').serialize();
$.ajax({
   type: "GET",//change to POST if your PHP script can use it
   url: "some.php",//file where your php function will be run.
   data: formData,
   dataType: 'JSON',
   success: function(msg){
     alert( "Data Saved: " + msg );//Will show an alert box if the GET was a success
   }
 });

php:

$data = $_SERVER['GET'];
print(saveData($data));

function saveData($arr){
    //Insert data into MySQL table

    //display JSON encoded result for AJAX result
    if(success)
        return json_encode(true);

    return json_encode(false);
}