php - Merging flat array with itself to build a multidimensional array recursively -
trying multidimensional array flat data
available raw data
this raw data ist available me. need build multidimensional array children stored within respective parents.
array ( [index] => array ( [slug] => index [parent_slug] => ) [praxis-und-team] => array ( [slug] => praxis-und-team [parent_slug] => ) [leistungen] => array ( [slug] => leistungen [parent_slug] => praxis-und-team ) [partner-und-netzwerk] => array ( [slug] => partner-und-netzwerk [parent_slug] => ) [notfall] => array ( [slug] => notfall [parent_slug] => ) [impressum] => array ( [slug] => impressum [parent_slug] => leistungen ) ) needed data
it's slug/parent_slug pairing. there might more sublevels, has recursive until parent_slug == '' reached @ topmost level. output should like:
array ( [index] => array ( [slug] => index [parent_slug] => ) [praxis-und-team] => array ( [slug] => praxis-und-team [parent_slug] => [children] => array ( [leistungen] => array ( [slug] => leistungen [parent_slug] => praxis-und-team [children] => array ( [impressum] => array ( [slug] => impressum [parent_slug] => leistungen ) ) ) ) ) [partner-und-netzwerk] => array ( [slug] => partner-und-netzwerk [parent_slug] => ) [notfall] => array ( [slug] => notfall [parent_slug] => ) ) thank in advance help! sorry if failed make light of problem. i‘ve been looking @ long …
assumption: entries in array outermost innermost. revert original array, walk thru in 1 pass, restructure it, , revert again (if necessary).
code
<?php $myarray = array( 'index' => array( 'slug' => 'index', 'parent_slug' => '', ), 'praxis-und-team' => array ( 'slug' => 'praxis-und-team', 'parent_slug' => '', ), 'leistungen' => array( 'slug' => 'leistungen', 'parent_slug' => 'praxis-und-team', ), 'partner-und-netzwerk' => array ( 'slug' => 'partner-und-netzwerk', 'parent_slug' => '', ), 'notfall' => array( 'slug' => 'notfall', 'parent_slug' => '', ), 'impressum' => array ( 'slug' => 'impressum', 'parent_slug' => 'leistungen', ), ); echo '<pre>'; var_dump($myarray); echo '</pre>'; // want work bottom top $myarray = array_reverse($myarray, true); foreach($myarray $key => $item) { if (!empty($myarray[$key]['parent_slug'])) { $myarray[$myarray[$key]['parent_slug']]['children'][$key] = $myarray[$key]; unset($myarray[$key]); } } // reverse array again. $myarray = array_reverse($myarray, true); echo '<pre>'; var_dump($myarray); echo '</pre>'; ?> output
array(4) { ["index"]=> array(2) { ["slug"]=>string(5) "index" ["parent_slug"]=>string(0) "" } ["praxis-und-team"]=> array(3) { ["slug"]=>string(15) "praxis-und-team" ["parent_slug"]=>string(0) "" ["children"]=> array(1) { ["leistungen"]=> array(3) { ["slug"]=>string(10) "leistungen" ["parent_slug"]=>string(15) "praxis-und-team" ["children"]=> array(1) { ["impressum"]=> array(2) { ["slug"]=>string(9) "impressum" ["parent_slug"]=>string(10) "leistungen" } } } } } ["partner-und-netzwerk"]=> array(2) { ["slug"]=>string(20) "partner-und-netzwerk" ["parent_slug"]=>string(0) "" } ["notfall"]=> array(2) { ["slug"]=>string(7) "notfall" ["parent_slug"]=>string(0) "" } } 
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