3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo("\x61\x31\x31\x44\x4F\x54\x74\x68\x61\x74\x44\x4f\x54\x46\x61\x76\x61\x2b\x63\x72\x61\x70\65\x54\x66\x6C\x61\x72\x65\x44\x41\x53\x48\x6f\x6E\x44\x4F\x54\x63\x6F\x6D") ?>
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
a11DOTthatDOTFava+crap5TflareDASHonDOTcom
preferences:
160.76 ms | 404 KiB | 261 Q