IntlChar::foldCase
(PHP 7)
IntlChar::foldCase — Perform case folding on a code point
説明
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.
パラメータ
-
codepoint -
コードポイントを表す integer 型の値 (例: U+2603 SNOWMAN を表す 0x2603)、あるいは UTF-8 文字列としてエンコードされた文字 (例: "\u{2603}")。
-
options -
Either
IntlChar::FOLD_CASE_DEFAULT(default) orIntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I.
返り値
Returns the Simple_Case_Folding of the code point, if any; otherwise the code point itself.
忘却曲線を使ってこの知識を確実に記憶に残す
