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@ 2018-10-04T10:51:35Z

<?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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: 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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122.35 ms | 1620 KiB | 4 Q