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<?php $x = new class() { function __construct() { echo __METHOD__.PHP_EOL; } } class_alias($x::class, B::class); new B();
Output for 8.2.0 - 8.2.28, 8.3.0 - 8.3.22, 8.4.1 - 8.4.8
Parse error: syntax error, unexpected identifier "class_alias" in /in/MLrBX on line 9
Process exited with code 255.

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