3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace { class CustomClass extends \stdClass { public function foo(): \Foo&\Bar|string { }
Output for 8.2.0 - 8.2.28, 8.3.0 - 8.3.21, 8.4.1 - 8.4.7
Parse error: syntax error, unexpected token "|", expecting ";" or "{" in /in/aivA5 on line 5
Process exited with code 255.
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178.81 ms | 1008 KiB | 7 Q