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<?php $arr = array( '1.0' => '1.0', '20.0' => '20.0', '5.0' => '5.0', ); krsort($arr); var_dump($arr); krsort($arr, SORT_NUMERIC); var_dump($arr);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(3) { ["20.0"]=> string(4) "20.0" ["5.0"]=> string(3) "5.0" ["1.0"]=> string(3) "1.0" } array(3) { ["20.0"]=> string(4) "20.0" ["5.0"]=> string(3) "5.0" ["1.0"]=> string(3) "1.0" }

preferences:
247.82 ms | 406 KiB | 349 Q