IntlChar::foldCase Perform case folding on a code point &reftitle.description; public static mixedIntlChar::foldCase mixedcodepoint intoptionsIntlChar::FOLD_CASE_DEFAULT The given character is mapped to its case folding equivalent; if the character has no case folding equivalent, the character itself is returned. &reftitle.parameters; codepoint &intl.codepoint.parameter; options Either IntlChar::FOLD_CASE_DEFAULT (default) or IntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I. &reftitle.returnvalues; Returns the Simple_Case_Folding of the code point, if any; otherwise the code point itself.