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<?php $arrPortales = array(array('idCMSPortal' => 1), array('idCMSPortal'=>104)); array_walk(function($e){echo $e . "\n";}, $arrPortales);
Output for 5.3.0 - 5.4.15
Fatal error: Only variables can be passed by reference in /in/TBil5 on line 4
Process exited with code 255.