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<?php $array = array( "1" => "0", "2" => "5", "5" => "7", "1C" => "0", "2C" => "5", "5C" => "10", "1S" => "15", "5S" => "20" ); Foreach($array as $key => $item){ If(!is_numeric(substr($key, -1))){ $new[substr($key, -1)][substr($key, 0,1)] = $item; }Else{ $new[] = $item; } } Var_dump($new);
Output for 7.1.0 - 7.1.33, 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(5) { [0]=> string(1) "0" [1]=> string(1) "5" [2]=> string(1) "7" ["C"]=> array(3) { [1]=> string(1) "0" [2]=> string(1) "5" [5]=> string(2) "10" } ["S"]=> array(2) { [1]=> string(2) "15" [5]=> string(2) "20" } }

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