3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a() {} \a(); @\fopen();
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
Fatal error: Uncaught ArgumentCountError: fopen() expects at least 2 arguments, 0 given in /in/WpFtj:4 Stack trace: #0 /in/WpFtj(4): fopen() #1 {main} thrown in /in/WpFtj on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/WpFtj on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/WpFtj on line 4

preferences:
267.47 ms | 402 KiB | 459 Q