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<?php function all_to_lower(...$args){ foreach($args as &$arg){ $arg = strtolower($arg); } return $args; } $in = all_to_lower('REW','YTYE'); print_r($in);
Output for 7.2.0 - 7.2.34, 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 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Array ( [0] => rew [1] => ytye )

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29.84 ms | 1137 KiB | 7 Q