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@ 2013-01-03T13:47:20Z

<?php
function foo(&$a) {
    $a++;
}
$a = 1;
$b = 'foo';
$b($a);
var_dump($a);

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

45.3 ms | 402 KiB | 5 Q