<?php $s = hex2bin('4175746f72697a616369f36e20537573616e6120436f6c6f6de920416c6120436964204649524d4144412e706466'); $s2 = preg_replace('#foo#isu', 'bar', $s); echo $s ."\n"; echo strlen('4175746f72697a616369f36e20537573616e6120436f6c6f6de920416c6120436964204649524d4144412e706466');
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