3v4l.org

run code in 300+ PHP versions simultaneously
<?php fopen('php://fd/1', 'r');
Output for 5.3.6 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 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
Output for 5.2.7 - 5.2.17, 5.3.0 - 5.3.5
Warning: fopen(): Invalid php:// URL specified in /in/Zuhkt on line 1 Warning: fopen(php://fd/1): failed to open stream: operation failed in /in/Zuhkt on line 1
Output for 5.2.1 - 5.2.6
Warning: fopen(): Invalid php:// URL specified in /in/Zuhkt on line 1 Warning: fopen(php://fd/1): failed to open stream: Inappropriate ioctl for device in /in/Zuhkt on line 1
Output for 4.3.2, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Warning: fopen(php://fd/1): failed to open stream: Inappropriate ioctl for device in /in/Zuhkt on line 1
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9
Warning: fopen(php://fd/1): failed to open stream: Success in /in/Zuhkt on line 1
Output for 4.3.0 - 4.3.1
Warning: fopen(php://fd/1) [http://www.php.net/function.fopen]: failed to create stream: Inappropriate ioctl for device in /in/Zuhkt on line 1

preferences:
244.91 ms | 401 KiB | 370 Q