bool|int compare(string $str1, string $str2) Not supported. Compare two Unicode strings.
bool setStrength(int $strength) Not supported. Set the collator's strength.
bool asort(array $array, int $sortFlag = self::SORT_REGULAR) Sort array maintaining index association
string getSortKey(string $string) Not supported. Get sorting key for a string.
int getErrorCode() Returns collator's last error code. Always returns the UZEROERROR
bool setAttribute(int $attr, int $val) Not supported. Set a collator's attribute.
bool sortWithSortKeys(array $arr) Not supported. Sort array using specified collator and sort
bool sort(array $arr, int $sortFlag = self::SORT_REGULAR) Not supported. Sort array using specified
bool|int getAttribute(int $attr) Not supported. Get a value of an integer collator attribute
string getLocale(int $type = Locale::ACTUAL_LOCALE) Returns the collator's locale.
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