IntlChar
PHP Manual

IntlChar::foldCase

(PHP 7)

IntlChar::foldCasePerform case folding on a code point

说明

public static mixed IntlChar::foldCase ( mixed $codepoint [, int $options = IntlChar::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.

参数

codepoint

The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

options

Either IntlChar::FOLD_CASE_DEFAULT (default) or IntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I.

返回值

Returns the Simple_Case_Folding of the code point, if any; otherwise the code point itself.


IntlChar
PHP Manual