skahan
8/13/2013 - 8:57 PM

gistfile1.php

<?php
$a = 1;
$b = $a;
$b = 2;
echo "a:{$a}/b:{$b}</br>";//a:1/b:2

$a = 1;
$b =& $a;
$b = 2;
echo "a:{$a}/b:{$b}</br>";//a:2/b:2
?>