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run code in 300+ PHP versions simultaneously
<?php trait MyTrait { final protected function someMethod(): void {} } class Test { use MyTrait { someMethod as private anotherMethod; } public function __construct() { $this->anotherMethod(); } } new Test;
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.1, 8.3.17 - 8.3.25, 8.4.4 - 8.4.12
Output for 8.3.2 - 8.3.16, 8.4.1 - 8.4.3
Warning: Private methods cannot be final as they are never overridden by other classes in /in/YtW3h on line 8
Output for 7.0.0 - 7.0.33
Fatal error: Uncaught TypeError: Return value of Test::someMethod() must be an instance of void, none returned in /in/YtW3h:5 Stack trace: #0 /in/YtW3h(16): Test->anotherMethod() #1 /in/YtW3h(20): Test->__construct() #2 {main} thrown in /in/YtW3h on line 5
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
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/YtW3h on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/YtW3h on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/YtW3h on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YtW3h on line 3
Process exited with code 255.

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