note 126700 added to control-structures.foreach

It seems there is no easy way of itterating large arrays inplace. Solutions uses temporary key arrays anddo array reverse and so on, not a good fit for me with 170 000items in the array. I wrote this solution but I really wish someone will give me a better solution. (the callback step is optional of course) ArrayIterator first needed to make an array object copy of the array, so that was of no use. <?php $a = [10,20,30,40,50,60,70,80]; function foreachrev( array &$a, callable $funct ) : void { for( end( $a ) ; current( $a )!==false ; prev( $a ) ) { $key = key( $a ); $funct( $key, $a[$key] ); } } $sum = 0; foreachrev( $a, function( $key, &$val ) use(&$sum) { $sum+=$val; $val=($sum); } ); print_r( $a ); print_r( $sum ); ?> ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.5.135 (proxied: 185.176.246.186) ---- Manual Page -- https://php.net/manual/en/control-structures.foreach.php Edit -- https://main.php.net/note/edit/126700 Del: integrated -- https://main.php.net/note/delete/126700/integrated Del: useless -- https://main.php.net/note/delete/126700/useless Del: bad code -- https://main.php.net/note/delete/126700/bad+code Del: spam -- https://main.php.net/note/delete/126700/spam Del: non-english -- https://main.php.net/note/delete/126700/non-english Del: in docs -- https://main.php.net/note/delete/126700/in+docs Del: other reasons-- https://main.php.net/note/delete/126700 Reject -- https://main.php.net/note/reject/126700 Search -- https://main.php.net/manage/user-notes.php