3v4l.org

run code in 300+ PHP versions simultaneously
<?php $encodedSecret = "3d3d516343746d4d6d6c315669563362"; base64_decode(strrev(base64_encode($secret)));
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $secret in /in/CmTuf on line 3 Deprecated: base64_encode(): Passing null to parameter #1 ($string) of type string is deprecated in /in/CmTuf on line 3
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $secret in /in/CmTuf on line 3
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 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 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: secret in /in/CmTuf on line 3
Output for 7.3.32 - 7.3.33, 7.4.26
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: secret in /in/CmTuf on line 3

preferences:
235.34 ms | 405 KiB | 326 Q