Question

Per the example array at the very bottom, i want to be able to append the depth of each embedded array inside of the array. for example:

     array (       53 =>        array (         'title' => 'Home',         'path' => '',         'type' => '118',         'pid' => 52,         'hasChildren' => 0,       ), 

Has a depth of one according to the sample array shown below so it should now look like this:

     array (       53 =>        array (         'title' => 'Home',         'path' => '',         'type' => '118',         'pid' => 52,         'hasChildren' => 0,         'depth' => 1,       ), 

and so on…

All of the recursive array function attempts i have made are pretty embarrassing. However I have looked at RecursiveArrayIterator which has the getDepth function. I’m confused on how to append it to the current array… any help is VERY much appreciated, thank you.

     array (     'title' => 'Website Navigation',     'path' => '',     'type' => '115',     'pid' => 0,     'hasChildren' => 1,     'children' =>      array (       53 =>        array (         'title' => 'Home',         'path' => '',         'type' => '118',         'pid' => 52,         'hasChildren' => 0,       ),       54 =>        array (         'title' => 'Features',         'path' => 'features',         'type' => '374',         'pid' => 52,         'hasChildren' => 1,         'children' =>          array (           59 =>            array (             'title' => 'artistic',             'path' => 'features/artistic',             'type' => '374',             'pid' => 54,             'hasChildren' => 1,             'children' =>              array (               63 =>                array (                 'title' => 'galleries',                 'path' => 'features/artistic/galleries',                 'type' => '374',                 'pid' => 59,                 'hasChildren' => 1,                 'children' =>                  array (                   65 =>                    array (                     'title' => 'graphics',                     'path' => 'features/artistic/galleries/graphics',                     'type' => '118',                     'pid' => 63,                     'hasChildren' => 0,                   ),                   67 =>                    array (                     'title' => 'mixed medium',                     'path' => 'features/artistic/galleries/mixed-medium',                     'type' => '118',                     'pid' => 63,                     'hasChildren' => 0,                   ),                   64 =>                    array (                     'title' => 'overview',                     'path' => 'features/artistic/galleries',                     'type' => '118',                     'pid' => 63,                     'hasChildren' => 0,                   ),                   68 =>                    array (                     'title' => 'photography',                     'path' => 'features/artistic/galleries/photography',                     'type' => '118',                     'pid' => 63,                     'hasChildren' => 0,                   ),                   66 =>                    array (                     'title' => 'traditional',                     'path' => 'features/artistic/galleries/traditional',                     'type' => '118',                     'pid' => 63,                     'hasChildren' => 0,                   ),                 ),               ),               62 =>                array (                 'title' => 'overview',                 'path' => 'features/artistic',                 'type' => '118',                 'pid' => 59,                 'hasChildren' => 0,               ),               69 =>                array (                 'title' => 'tutorials',                 'path' => 'features/artistic/tutorials',                 'type' => '374',                 'pid' => 59,                 'hasChildren' => 1,                 'children' =>                  array (                   71 =>                    array (                     'title' => 'by category',                     'path' => 'features/artistic/tutorials/by-category/',                     'type' => '118',                     'pid' => 69,                     'hasChildren' => 0,                   ),                   72 =>                    array (                     'title' => 'by date',                     'path' => 'features/artistic/tutorials/by-date/',                     'type' => '118',                     'pid' => 69,                     'hasChildren' => 0,                   ),                   70 =>                    array (                     'title' => 'overview',                     'path' => 'features/artistic/tutorials',                     'type' => '118',                     'pid' => 69,                     'hasChildren' => 0,                   ),                 ),               ),             ),           ),           58 =>            array (             'title' => 'overview',             'path' => 'features',             'type' => '118',             'pid' => 54,             'hasChildren' => 0,           ),           61 =>            array (             'title' => 'projects / labs',             'path' => 'features/projects-labs/',             'type' => '374',             'pid' => 54,             'hasChildren' => 0,           ),           60 =>            array (             'title' => 'web development',             'path' => 'features/web-development',             'type' => '374',             'pid' => 54,             'hasChildren' => 1,             'children' =>              array (               74 =>                array (                 'title' => 'articles',                 'path' => 'features/web-development/articles/',                 'type' => '374',                 'pid' => 60,                 'hasChildren' => 0,               ),               73 =>                array (                 'title' => 'overview',                 'path' => 'features/web-development',                 'type' => '118',                 'pid' => 60,                 'hasChildren' => 0,               ),               75 =>                array (                 'title' => 'tutorials',                 'path' => 'features/web-development/tutorials',                 'type' => '374',                 'pid' => 60,                 'hasChildren' => 0,               ),             ),           ),         ),       ),       55 =>        array (         'title' => 'Activity',         'path' => 'activity',         'type' => '374',         'pid' => 52,         'hasChildren' => 0,       ),       56 =>        array (         'title' => 'Blog',         'path' => 'blog',         'type' => '374',         'pid' => 52,         'hasChildren' => 0,       ),       57 =>        array (         'title' => 'About',         'path' => 'about',         'type' => '374',         'pid' => 52,         'hasChildren' => 1,         'children' =>          array (           76 =>            array (             'title' => 'the author',             'path' => 'about/the-author',             'type' => '118',             'pid' => 57,             'hasChildren' => 0,           ),           77 =>            array (             'title' => 'the website',             'path' => 'about/the-website',             'type' => '118',             'pid' => 57,             'hasChildren' => 0,           ),         ),       ),     ),   ), );  print_r($example);  ?> 

Answer 1

I assume there is another array( at the top not included in your example code. Something like this?

function array_set_depth($array, $depth = -1) {   $subdepth = $depth + 1;   if ($depth < 0) {     foreach ($array as $key => $subarray) {       $temp[$key] = array_set_depth(($subarray), $subdepth);     }   }   if ($array['hasChildren'] && isset($array['children'])) {     foreach ($array['children'] as $key => $subarray) {       $temp[$key] = array_set_depth($subarray, $subdepth);     }     $array['children'] = $temp;   }   $array['depth'] = $depth;   return $array; } 

Example usage, I set your array to the value $a:

$b = array_set_depth($a); print_r($b); 

Edit:

To set depth before the children for nice printing you can do this:

function array_set_depth($array, $depth = -1) {   $subdepth = $depth + 1;   if ($depth < 0) {     foreach ($array as $key => $subarray) {       $temp[$key] = array_set_depth(($subarray), $subdepth);     }     return $temp;   }   $array['depth'] = $depth;   if ($array['hasChildren'] && isset($array['children'])) {     foreach ($array['children'] as $key => $subarray) {       $temp[$key] = array_set_depth($subarray, $subdepth);     }     unset($array['children']);     $array['children'] = $temp;   }   return $array; }