3v4l.org

run code in 500+ PHP versions simultaneously
<?php echo base64_encode('hello' . ':' . 'how are you?');
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
aGVsbG86aG93IGFyZSB5b3U/
preferences:
107.31 ms | 1253 KiB | 4 Q