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@ 2015-09-24T09:55:27Z

<?php
session_start();
function foo(&$boo){
    $_SESSION['boo']=&$boo;
}
$boo=1;
foo($boo);
$boo=2;
var_dump($boo);             // int(2)
var_dump($_SESSION['boo']); // int(1)

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
session_start: documentation ( source)

preferences:dark modelive preview

28.34 ms | 402 KiB | 5 Q