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@ 2016-05-12T06:42:04Z

<?php

function plop(int $val = null)
{
    printf("val = %d\n", $val);
}

function autre() : int 
{
    return null;
}

plop(42);
plop(null);

autre();

Output
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printf: documentation ( source)

preferences:dark modelive preview

58.97 ms | 402 KiB | 5 Q