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@ 2013-12-13T13:53:06Z

<?php
$arr = array(2, 4, 8);
doFoo($arr);
print_r($arr);

function doFoo($array)
{
    foreach ($array as &$foo) {
        $foo += 1;
        echo '<pre>'.$foo.'</pre>';
    }
}

Output
Performance
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print_r: documentation ( source)

preferences:dark modelive preview

44.56 ms | 402 KiB | 5 Q