3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($http_response_header); $x = fopen('php://stdin'); var_dump($http_response_header);
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: Undefined variable $http_response_header in /in/C0YQ5 on line 2 NULL Fatal error: Uncaught ArgumentCountError: fopen() expects at least 2 arguments, 1 given in /in/C0YQ5:3 Stack trace: #0 /in/C0YQ5(3): fopen('php://stdin') #1 {main} thrown in /in/C0YQ5 on line 3
Process exited with code 255.
Output for 5.0.4 - 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 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: http_response_header in /in/C0YQ5 on line 2 NULL Warning: fopen() expects at least 2 parameters, 1 given in /in/C0YQ5 on line 3 Notice: Undefined variable: http_response_header in /in/C0YQ5 on line 4 NULL
Output for 7.3.32 - 7.3.33
NULL Warning: fopen() expects at least 2 parameters, 1 given in /in/C0YQ5 on line 3 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: http_response_header in /in/C0YQ5 on line 2 NULL Warning: fopen() expects at least 2 parameters, 1 given in /in/C0YQ5 on line 3 Notice: Undefined variable: http_response_header in /in/C0YQ5 on line 4 NULL

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327.43 ms | 402 KiB | 454 Q