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<?php $array = [ '500 - 1112', ' 1113 - 2224', '2225 - 4446 ', '4446' ]; var_export( array_reduce( $array, function ($result, $v) { if (sscanf($v, '%d - %d', $ints[], $ints[]) === 2) { $result[0] ??= []; array_push($result[0], ...$ints); } else { $result[1] = $ints[0]; } return $result; }, [] ) );
Output for git.master_jit, git.master
array ( 0 => array ( 0 => 500, 1 => 1112, 2 => 1113, 3 => 2224, 4 => 2225, 5 => 4446, ), 1 => 4446, )

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