3v4l.org

run code in 300+ PHP versions simultaneously
<?php strtr( base64_encode( random_bytes(9) ), '+/', '-_' );
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0 - 7.3.1
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Call to undefined function random_bytes() in /in/92tsg on line 5
Process exited with code 255.
preferences:
73.35 ms | 402 KiB | 63 Q