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<?php class Go { public function if (bool $cond): Go { return $this; } public function then(callable $func): Go { return $this; } } $go = (new Go)->if(5 > 3)->then(function () {echo 'YAY!';}); var_dump($go);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
object(Go)#1 (0) { }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected 'if' (T_IF), expecting identifier (T_STRING) in /in/6vm2c on line 4
Process exited with code 255.

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