3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test() { return !!''; } var_dump(test);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant "test" in /in/aO1pN:7 Stack trace: #0 {main} thrown in /in/aO1pN on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant test - assumed 'test' (this will throw an Error in a future version of PHP) in /in/aO1pN on line 7 string(4) "test"
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.25
Notice: Use of undefined constant test - assumed 'test' in /in/aO1pN on line 7 string(4) "test"

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291.92 ms | 402 KiB | 333 Q