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run code in 300+ PHP versions simultaneously
<?php class A { public static function a() {echo "A\n";} } class B { public static function a() { static::a(); } }
Output for 8.1.23 - 8.1.27, 8.2.10 - 8.2.17, 8.3.0 - 8.3.4
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.23
Fatal error: Constructor A::a() cannot be static in /in/JMo9n on line 5
Process exited with code 255.

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