3v4l.org

run code in 300+ PHP versions simultaneously
<?php $word = 'base64_decode'; echo 'bin2hex: ' . PHP_EOL; echo implode(array_map(function($char) { return '\x' . bin2hex($char); }, str_split($word))) . PHP_EOL . PHP_EOL; echo 'unpack: ' . PHP_EOL; echo implode(array_map(function($char) { return '\x' . implode(unpack('H*', $char)); }, str_split($word))) . PHP_EOL . PHP_EOL; echo 'sprintf: ' . PHP_EOL; echo implode(array_map(function($char) { return sprintf('\x%02X', ord($char)); }, (array) str_split($word)));
preferences:
38.24 ms | 411 KiB | 5 Q