Iterate in reverse through an array with PHP - SPL solution?

Question

Is there an SPL Reverse array iterator in PHP? And if not, what would be the best way to achieve it?

I could simply do

$array = array_reverse($array); foreach($array as $currentElement) {} 

or

for($i = count($array) - 1; $i >= 0; $i--) {  } 

But is there a more elegant way?

Answer 1

Here is a solution that does not copy and does not modify the array:

for (end($array); key($array)!==null; prev($array)){   $currentElement = current($array);   // ... } 

If you also want a reference to the current key:

for (end($array); ($currentKey=key($array))!==null; prev($array)){   $currentElement = current($array);   // ... } 

This works always as php array keys can never be null and is faster than any other answer given here.

Answer 2

$item=end($array); do { ... } while ($item=prev($array));