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<?php $arr = [ 'foo', 'foo', 'bar', 'baZ', 'baz', 'fÖo' ]; $arrRes = []; $arrLower = []; foreach ($arr as $v) { $lower = mb_strtolower($v, 'utf-8'); foreach ($arrLower as $lower2) { if ($lower === $lower2) { continue 2; } } $arrRes[] = $v; $arrLower[] = $lower; } var_dump($arrRes);
Output for 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(4) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> string(3) "baZ" [3]=> string(4) "fÖo" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(4) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> string(3) "baZ" [3]=> string(4) "fÖo" }
preferences:
164.83 ms | 402 KiB | 218 Q