3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php $a = '\x30'; $a = str_replace($a, '\x', ''); echo hex2bin($a);
Output for 5.3.0 - 5.3.18, 5.4.0 - 5.4.8
Parse error: syntax error, unexpected '<' in /in/mnO1a on line 2
Process exited with code 255.
preferences:
170.11 ms | 1395 KiB | 35 Q