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<?php $b = 10; $f = function() use ($b) { return $x = function($b) { return $b; }; }; var_dump( $f(1){()});
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.22
Parse error: syntax error, unexpected '{' in /in/TuX4r on line 7
Process exited with code 255.

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