- var_dump: documentation ( source)
<?php
function &g(&$v) {
return $v;
}
function f(&$v) {
$v = 5;
}
$foo = null;
$name = 'foo';
//call_user_func_array('f', array($a = &g($$name)));
$a = g($$name);
$a = 3;
//var_dump(array(g($$name)));
var_dump($foo);