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<?php $users = array( "name one"=>"-11", "name two"=>"5.5", "name three"=>"8", "name four"=>"7", "name five"=>"9", "name six"=>"12"); asort($users); $keys = array_keys($users); if(end($users) + $users[$keys[0]] < $users[$keys[1]]-$users[$keys[0]]){ $new[0][$keys[0]] = array_splice($users,0,1); $new[0][end($keys)] = array_splice($users,-1); } $new = array_merge($new, array_chunk($users,2,true)); var_dump($new);
Output for 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 - 8.3.25, 8.4.1 - 8.4.12
array(3) { [0]=> array(2) { ["name one"]=> array(1) { ["name one"]=> string(3) "-11" } ["name six"]=> array(1) { ["name six"]=> string(2) "12" } } [1]=> array(2) { ["name two"]=> string(3) "5.5" ["name four"]=> string(1) "7" } [2]=> array(2) { ["name three"]=> string(1) "8" ["name five"]=> string(1) "9" } }

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