Online PHP editor | refs for DddcB

<?php /* Default from the book */ $a = range(3,9); foreach ($a as $b) { switch($b) { case 3: $b = 7; case 7: $b = 3; default: // do nothing } } echo implode('-',$a) . PHP_EOL; // Excerpt From: Lorna Mitchell. “Zend Certification Preparation Pack.” iBooks. /* Suggested alternate method from the book */ $a = range(3,9); foreach ($a as $key => $b) { switch($b) { case 3: $a[$key] = 7; case 7: $a[$key] = 3; default: // do nothing } } echo implode('-',$a) - PHP_EOL; /* Second alternate by using $b by reference */ $a = range(3,9); foreach ($a as &$b) { switch($b) { case 3: $b = 7; case 7: $b = 3; default: // do nothing } } echo implode('-',$a);