3v4l.org

run code in 300+ PHP versions simultaneously
<?php include('php://fd/0');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: include(php://fd/0): Failed to open stream: operation failed in /in/IjflU on line 1 Warning: include(): Failed opening 'php://fd/0' for inclusion (include_path='.:') in /in/IjflU on line 1
Output for 5.3.14 - 5.3.29, 5.4.4 - 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
Warning: include(php://fd/0): failed to open stream: operation failed in /in/IjflU on line 1 Warning: include(): Failed opening 'php://fd/0' for inclusion (include_path='.:') in /in/IjflU on line 1
Output for 5.3.6 - 5.3.13, 5.4.0 - 5.4.3
Output for 5.3.0 - 5.3.5
Warning: include(): Invalid php:// URL specified in /in/IjflU on line 1 Warning: include(php://fd/0): failed to open stream: operation failed in /in/IjflU on line 1 Warning: include(): Failed opening 'php://fd/0' for inclusion (include_path='.:') in /in/IjflU on line 1

preferences:
234.17 ms | 402 KiB | 261 Q