Calling php class function in javascript (ajax) - php

Question

I was wondering if is there any good practices to call method from php class with Javascript, by the way of Ajax.
This is my current "style" to execute it.
(The method in the class are only here for example)
PHP side :
<?php
if(isset($_POST['action']) && $_POST['action'] != null)
{
extract($_POST);
if($action)
{
$ajaxCommand = new EleveUpdate();
if(method_exists($ajaxCommand, $action))
{
$reponse = call_user_func(array($ajaxCommand, $action),$_POST);
echo $reponse;
exit(0);
}
else
{
throw new Exception("Cette méthode n'existe pas");
}
}
}
else
{
echo 'Cette action n\'est pas autorisée';
return false;
}
class EleveUpdate
{
public function __construct()
{
}
public function testfunct($data)
{
echo $data['eleve'];
}
}
Javascript side:
$(document).ready(function() {
$.ajax({
url: 'eleveupdate.php',
type: 'POST',
data: {
action: "testfunct",
eleve: 1
},
beforeSend: function()
{
loading(true);
},
error: function()
{
console.log('error');
},
success: function(data)
{
loading(false);
console.log(data);
}
});
});
The problem is that the isset $_POST is always in my class, I'm pretty sure this is not the right way to do it so, I'm here to found help about it.
Thanks you in advance
Simon

Answer 1

The problem is it's not easy to call scope-namings based on a string-request.
You can use something called LAMBDA, or anonymous functions. This way you can store an array of strings with a LAMBDA attached to them. Like this:
<?php
class EleveUpdate {
private $funcs = array();
function __construct($which_function) {
$funcs['testfunct'] = create_function('$a,$b', 'return "ln($a) + ln($b) = " . log($a * $b);');
$funcs[$which_function];
}
}
?>
See more info here: http://www.php.net/manual/en/function.create-function.php
You probably won't even need the Class anymore with this method, but just showing.