IntlChar::isblank
(PHP 7)
IntlChar::isblank — Check if code point is a "blank" or "horizontal space" character
説明
Determines whether the specified code point is a "blank" or "horizontal space", a character that visibly separates words on a line.
The following are equivalent definitions:
-
TRUEfor Unicode White_Space characters except for "vertical space controls" where "vertical space controls" are the following characters: U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS) -
TRUEfor U+0009 (TAB) and characters with general category "Zs" (space separators) except Zero Width Space (ZWSP, U+200B).
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}")。
返り値
Returns TRUE if
codepoint is either a "blank" or "horizontal space" character, FALSE if not.
例
例1 さまざまなコードポイントの例
<?php
var_dump(IntlChar::isblank("A"));
var_dump(IntlChar::isblank(" "));
var_dump(IntlChar::isblank("\t"));
?>
上の例の出力は以下となります。
bool(false) bool(true) bool(true)
参考
- IntlChar::isspace() - Check if code point is a space character
- IntlChar::isJavaSpaceChar() - Check if code point is a space character according to Java
- IntlChar::isUWhiteSpace() - Check if code point has the White_Space Unicode property
- IntlChar::isWhitespace() - Check if code point is a whitespace character according to ICU
忘却曲線を使ってこの知識を確実に記憶に残す
