3v4l.org

run code in 300+ PHP versions simultaneously
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Output for 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
Fatal error: Uncaught Error: stream_select(): Argument #1 ($read) could not be passed by reference in /in/4XVcU:3 Stack trace: #0 {main} thrown in /in/4XVcU on line 3
Process exited with code 255.
Output for 8.1.23 - 8.1.31, 8.2.10 - 8.2.27
Fatal error: Uncaught Error: stream_select(): Argument #1 ($read) cannot be passed by reference in /in/4XVcU:3 Stack trace: #0 {main} thrown in /in/4XVcU on line 3
Process exited with code 255.
Output for 4.3.2 - 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, 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 - 7.2.31, 7.3.0 - 7.3.19, 7.4.0 - 7.4.7
Fatal error: Only variables can be passed by reference in /in/4XVcU on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/4XVcU on line 3

preferences:
74.37 ms | 413 KiB | 5 Q