3v4l.org

run code in 300+ PHP versions simultaneously
<?php $f = fopen('php://temp', 'r+');
Output for 5.1.4 - 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 - 7.1.10, 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 - 8.3.7
Output for 4.3.2, 5.0.0 - 5.0.5, 5.1.0 - 5.1.3
Warning: fopen(php://temp): failed to open stream: Inappropriate ioctl for device in /in/u3aLK on line 3
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.3, 4.4.5 - 4.4.9
Warning: fopen(php://temp): failed to open stream: Success in /in/u3aLK on line 3
Output for 4.4.4
Warning: fopen(php://temp): failed to open stream: Cannot allocate memory in /in/u3aLK on line 3
Output for 4.3.0 - 4.3.1
Warning: fopen(php://temp) [http://www.php.net/function.fopen]: failed to create stream: Inappropriate ioctl for device in /in/u3aLK on line 3

preferences:
214.63 ms | 401 KiB | 313 Q