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run code in 300+ PHP versions simultaneously
<?php abstract class x { function test(x $x) { var_dump($x); } } class y extends x { } (new y)->test(null);
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 TypeError: x::test(): Argument #1 ($x) must be of type x, null given, called in /in/UuE4L on line 14 and defined in /in/UuE4L:4 Stack trace: #0 /in/UuE4L(14): x->test(NULL) #1 {main} thrown in /in/UuE4L on line 4
Process exited with code 255.
Output for 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
Fatal error: Uncaught TypeError: Argument 1 passed to x::test() must be an instance of x, null given, called in /in/UuE4L on line 14 and defined in /in/UuE4L:4 Stack trace: #0 /in/UuE4L(14): x->test(NULL) #1 {main} thrown in /in/UuE4L on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to x::test() must be an instance of x, null given, called in /in/UuE4L on line 14 and defined in /in/UuE4L on line 4
Process exited with code 255.

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