3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = 'Happy^ hour^ / is fun //'; function filenameEncode($possible_filename){ $fngood = str_replace(array('^',';','/',':'), array('^^',';;','^',';'), $possible_filename); return $fngood; } function filenameDecode($possible_filename){ $fngood = str_replace(array('^',';','^^',';;'), array('/',':','^',';'), $possible_filename); return $fngood; } echo $s."\n"; $t = filenameEncode($s); $u = filenameDecode($t); echo $t."\n"; echo $u."\n"; if ($s === $u){ echo 'test passed'; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Happy^ hour^ / is fun // Happy^^ hour^^ ^ is fun ^^ Happy// hour// / is fun //

preferences:
264.82 ms | 405 KiB | 342 Q