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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = base_convert(0xFF,16,2); $b = base_convert(~0xFF,16,2); var_dump($a, $b);
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
string(10) "1001010101" string(10) "1001010110"