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@ 2014-10-24T11:37:42Z

<?php

for ($i = 0; $i <= 255; $i++)
{
	$x = ord(chr($i) ^ chr(128));
	var_dump([$i, $x, $i !== $x]);
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
chr: documentation ( source)
ord: documentation ( source)

preferences:dark modelive preview

29.48 ms | 402 KiB | 5 Q