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<?php $anon = new class extends Exception { public function __invoke($a, $b) { echo $a.$b.PHP_EOL; } } call_user_func($anon, 'Hello', 'World');
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.15
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/NEETb on line 3
Process exited with code 255.

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