Edit report at https://bugs.php.net/bug.php?id=50532&edit=1
ID: 50532 Updated by: ni...@php.net Reported by: jsimlo at yahoo dot com Summary: Lazy-evaluated multiple-array foreach -Status: Open +Status: Wont fix Type: Feature/Change Request Package: Arrays related Operating System: * PHP Version: * Block user comment: N Private report: N New Comment: I don't think it makes to extend the foreach syntax in that direction. It's hard to understand and rarely useful. Instead use AppendIterator from SPL (http://php.net/appenditerator). Previous Comments: ------------------------------------------------------------------------ [2009-12-19 12:38:04] jsimlo at yahoo dot com Description: ------------ I would like to suggest an extended foreach syntax like this: <?php foreach ($a, $b, $c as $k => $i) echo $i; ?> Which would result in the same execution as current: <?php foreach (array ($a, $b, $c) as $x) foreach ($x as $k => $i); echo $i; ?> The reason for requesting this is (simplicity and) possibility of lazy-evaluation of the source arrays. The source arrays can be expressions that take time to compute; or consume large memory each while they exist; and the body of the foreach can break the foreach cycle, rendering a lazy-evaluation quite worth the trouble. Example: <?php // several not-so-easy-to-compute arrays foreach ( $item1->GetChilds(), $item2->GetChilds(), $item3->GetParent()->GetChilds(), $item3->GetComputeSomethingDifficultChilds() as $child ) // searching for a child with a special name if ($child->GetName() == 'something') break; // now we got a child of such name (or the last cycled child) print_r ($child); Reproduce code: --------------- --- >From manual page: control-structures.foreach --- ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=50532&edit=1
