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@ 2013-12-02T12:38:31Z

<?php

function foo(&$var)
{
    $var++;
}
function &bar()
{
    $a = 5;
    return $a;
}
var_dump(foo(bar()));

Output
Performance
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var_dump: documentation ( source)

preferences:dark modelive preview

50.92 ms | 402 KiB | 5 Q