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<?php // First array, wont use unset $arr = array( 'a' => array('value' => 2), 'b' => array('value' => 4), 'c' => array('value' => 6) ); // Second copy, for unset $arr2 = $arr; // Loop and display without unset foreach ($arr as &$a) { $a['value'] /= 2; } echo "Without Unset:"; foreach ($arr as $a) { print_r($a); } // Loop and display with unset foreach ($arr2 as &$b) { $b['value'] /= 2; } unset($b); echo "With Unset:"; foreach ($arr2 as $b) { print_r($b); }
Output for git.master, git.master_jit, rfc.property-hooks
Without Unset:Array ( [value] => 1 ) Array ( [value] => 2 ) Array ( [value] => 2 ) With Unset:Array ( [value] => 1 ) Array ( [value] => 2 ) Array ( [value] => 3 )

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