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run code in 300+ PHP versions simultaneously
<?php interface Runnable { public function run(string $details): void; } class Impl1 implements Runnable { public function run(string $details): void { } } class Impl2 implements Runnable { public function run(string $other): void { } } function getImpl():Runnable{ static $i=0; if($i===1){ return new Impl2(); } ++$i; return new Impl1(); } getImpl()->run(details:"foo"); getImpl()->run(details:"foo");
Output for 8.0.0 - 8.0.3, 8.1.23 - 8.1.31, 8.2.10 - 8.2.27, 8.3.0 - 8.3.16, 8.4.1 - 8.4.3
Fatal error: Uncaught Error: Unknown named parameter $details in /in/KAWdD:28 Stack trace: #0 {main} thrown in /in/KAWdD on line 28
Process exited with code 255.
Output for 7.3.0 - 7.3.28, 7.4.0 - 7.4.16
Parse error: syntax error, unexpected ':', expecting ')' in /in/KAWdD on line 27
Process exited with code 255.
Output for 7.2.0 - 7.2.34
Parse error: syntax error, unexpected ':', expecting ',' or ')' in /in/KAWdD on line 27
Process exited with code 255.

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