Array merge on multidimensional array

arrays, multidimensional-array, php

Solution

$out = array();
foreach ($arr1 as $key => $value){
    $out[] = (object)array_merge((array)$arr2[$key], (array)$value);
}
print_r($out)

Problem

Either I'm blind or I can't find this problem anywhere here on SO. Yesterday I had a problem with merging arrays, which I could fix with the help of SO. Today I have, again, a problem with merging arrays, but this time it's with multidimensional Arrays. I have an array `$usergroup['groups']` and an array `$usergroup['lang']` `$usergroup['groups']` looks like this: ``` Array ( [0] => Usergroup_Model Object ( [id] => 1 [deleted] => 0 ) [1] => Usergroup_Model Object ( [id] => 2 [deleted] => 0 ) [2] => Usergroup_Model Object ( [id] => 3 [deleted] => 0 ) ) ``` And `$usergroup['lang']` looks like this: ``` Array ( [0] => Usergroup_Model Object ( [id] => [id_usergroup] => 1 [name] => Administratoren [id_lang] => 1 ) [1] => Usergroup_Model Object ( [id] => [id_usergroup] => 2 [name] => Benutzer [id_lang] => 1 ) [2] => Usergroup_Model Object ( [id] => [id_usergroup] => 3 [name] => Gäste [id_lang] => 1 ) ) ``` I want my merged array to look like this: ``` Array ( [0] => Usergroup_Model Object ( [id] => 1 [id_usergroup] => 1 [name] => Administratoren [id_lang] => 1 [deleted] => 0 ) [1] => Usergroup_Model Object ( [id] => 2 [id_usergroup] => 2 [name] => Benutzer [id_lang] => 1 [deleted] => 0 ) [2] => Usergroup_Model Object ( [id] => 3 [id_usergroup] => 3 [name] => Gäste [id_lang] => 1 [deleted] => 0 ) ) ``` What have I tried? I've tried several merging functions (`array_merge()` and `array_merge_recursive()`) of PHP, the closest result I got was, that the second Array (`['lang']`) overwrote the first Array (`['groups']`). To fix that, I tried to remove the empty values on the `lang` Array (which is always `id`). But that does not fix it. The code - at the moment - looks like this: ``` public static function getAll() { $usergroup['groups'] = self::find(); $usergroup['lang'] = self::findInTable(array( 'id_lang' => Language_Model::getDefaultLanguage() ), self::dbTranslationTable); foreach ($usergroup as $ug) { $ug = array_filter($ug, function($val) { return $val != ''; }); } return array_merge($ug); } ``` The array_merge() on the return command doesn't seem to do anything at all, so I'm probably not gathering the data correctly or I mess something up with the Arrays (forgetting to add [], or I don't know...). I kinda miss the forest for the trees here. Any suggestions in which direction I could go? Edit: With the code provided by Pé de Leão I was able to solve the problem. My function now looks like this: ``` public static function getAll() { $usergroup['groups'] = self::find(); $usergroup['lang'] = self::findInTable(array( 'id_lang' => Language_Model::getDefaultLanguage() ), self::dbTranslationTable); $out = array(); foreach ($usergroup['groups'] as $key => $value) { $out[] = (object) array_merge((array) $usergroup['lang'][$key], (array) $value); } return $out; } ``` And the result is exactly how I wanted it!

Original source