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<?php $arr2 = array ( 0 => array ( 0 => 'company-group', 1 => 'index', ), 1 => array ( 0 => 'company-group', 1 => 'view', ), 2 => array ( 0 => 'company-group', 1 => 'create', ), 3 => array ( 0 => 'company-group', 1 => 'update', ), 4 => array ( 0 => 'company-group', 1 => 'delete', ), 5 => array ( 0 => 'company-industry', 1 => 'index', ), 6 => array ( 0 => 'company-industry', 1 => 'view', ), 7 => array ( 0 => 'company-industry', 1 => 'create', ), 8 => array ( 0 => 'company-industry', 1 => 'update', ), 9 => array ( 0 => 'company-industry', 1 => 'delete', ), ); Foreach($arr2 as $sub){ $new[$sub[0]]["key"] = $sub[0]; $new[$sub[0]]["val"][] = $sub[1]; } Var_dump(array_values($new));
Output for 5.6.38, 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array(2) { [0]=> array(2) { ["key"]=> string(13) "company-group" ["val"]=> array(5) { [0]=> string(5) "index" [1]=> string(4) "view" [2]=> string(6) "create" [3]=> string(6) "update" [4]=> string(6) "delete" } } [1]=> array(2) { ["key"]=> string(16) "company-industry" ["val"]=> array(5) { [0]=> string(5) "index" [1]=> string(4) "view" [2]=> string(6) "create" [3]=> string(6) "update" [4]=> string(6) "delete" } } }

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