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run code in 300+ PHP versions simultaneously
<?php function startAt($x){ function incrementBy($y){ return $x + $y; } return incrementBy; } $closure1 = startAt(1); $closure2 = startAt(5); echo $closure1; echo "<br/>"; echo $closure2;
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 Error: Undefined constant "incrementBy" in /in/hT4nP:7 Stack trace: #0 /in/hT4nP(9): startAt(1) #1 {main} thrown in /in/hT4nP 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 incrementBy - assumed 'incrementBy' (this will throw an Error in a future version of PHP) in /in/hT4nP on line 7 Fatal error: Cannot redeclare incrementBy() (previously declared in /in/hT4nP:4) in /in/hT4nP on line 4
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant incrementBy - assumed 'incrementBy' in /in/hT4nP on line 7 Fatal error: Cannot redeclare incrementBy() (previously declared in /in/hT4nP:4) in /in/hT4nP on line 4
Process exited with code 255.
preferences:
217.19 ms | 402 KiB | 329 Q