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run code in 150+ php & hhvm versions
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<?php $b = 10; $f = function($b) { return function($b){ return $b } }; var_dump( $f(1)());
Output for 5.3.0 - 5.4.22
Parse error: syntax error, unexpected '}' in /in/j5CnW on line 3
Process exited with code 255.