PHP动态函数调用

Question

I'm not so sure about how I should ask this question but I'll try to make it clear :

I have document.php and doc2.php (for example).

In the first one, I want to put a function in a variable so that I'll be able to say in the first one :

   $_SESSION['action'] = 'exampleFunction($params)';

In the second document, I'd love to be able to say :

   $params = 'test';
   $_SESSION['action']; 

It would then be possible for me to launch the right function depending on what the user does in the previous document.

Answer 1

You can use "variable functions"

<?php
function foo() {
    echo "In foo()<br />\n";
}

$func = 'foo';
$func('arg1');

Reference: http://php.net/manual/en/functions.variable-functions.php

Answer 2

Or you can use create_function() .

Reference.

Answer 3

You can use eval function: http://www.php.net/manual/function.eval.php

eval($_SESSION['action']);

But i strongly discourage to do so, because it's dangerously insecure