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@ 2016-10-28T11:13:02Z

<?php

$foo = 1;
$bar = 2;
$baz = 4;
$fooBarBaz = null;
$fooBarBaz |= $foo;
$fooBarBaz |= $bar;
$fooBarBaz |= $baz;

var_dump($fooBarBaz);
var_dump($fooBarBaz^=$foo);

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

68.03 ms | 402 KiB | 5 Q