Question:
I have a menu being built via a multi-dimensional array. A current item is set by matching its url attribute with the current request. I want this value to bubble up to its parents, but I can't for the life of me get it working - I'm sure I've been close, but it's proving a bit tricky. Here's the array:
Array ( [children] => Array ( [Home] => Array ( [url] => / ) [The Challenge] => Array ( [url] => /challenge ) [The Finish] => Array ( [url] => /finish ) [Latest News] => Array ( [url] => /latest_news ) [Participants] => Array ( [url] => /participants [children] => Array ( [Some guy] => Array ( [url] => /participants/some_guy [children] => Array ( [Hats] => Array ( [url] => /participants/some_guy/hats [current] => 1 Essentially, I'm looking for a function that will iterate through every item until it finds the [current] flag, then propagate that value back up to its parents. There are no set limits on depth in the menu.
For the example above, it would result in:
Array ( [children] => Array ( [Home] => Array ( [url] => / ) [The Challenge] => Array ( [url] => /challenge ) [The Finish] => Array ( [url] => /finish ) [Latest News] => Array ( [url] => /latest_news ) [Participants] => Array ( [url] => /participants [current] => 1 [children] => Array ( [Some guy] => Array ( [url] => /participants/some_guy [current] => 1 [children] => Array ( [Hats] => Array ( [url] => /participants/some_guy/hats [current] => 1
Solution:1
like
function set_current($menu) { if(!is_array($menu)) return 0; if(isset($menu['current'])) return 1; foreach($menu as $sub) { if(set_current($sub)) return $menu['current'] = 1; } return 0; } not tested, because you posted data unsuitable for testing (oh dear, why why do they keep posting those var_dumps?)
Solution:2
Here's the modified, working version:
function set_current(&$menu) { if(!is_array($menu)) return false; if(isset($menu['current'])) return true; if(isset($menu['children'])){ foreach($menu['children'] as $key => $value) { if(set_current($menu['children'][$key])){ $menu['current'] = true; return true; } } } return false; } Thanks for the help; I'd been very close repeatedly over the past few days, just needed to see it written slightly differently to finish it off.
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