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@ 2015-12-19T16:37:30Z

<?php

function add(int $a, int $b) {
    return $a + $b;
}

$a = 5;
$b = 3;
settype($a, int);
settype($b, int);
echo(add($a, $b));

Output
Performance
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settype: documentation ( source)

preferences:dark modelive preview

42.37 ms | 402 KiB | 5 Q