IntlChar::isWhitespace

(PHP 7)

IntlChar::isWhitespace — Check if code point is a whitespace character according to ICU

説明

public static IntlChar::isWhitespace ( mixed $codepoint ) : bool

Determines if the specified code point is a whitespace character according to ICU.

A character is considered to be a ICU whitespace character if and only if it satisfies one of the following criteria:

  • It is a Unicode Separator character (categories "Z" = "Zs" or "Zl" or "Zp"), but is not also a non-breaking space (U+00A0 NBSP or U+2007 Figure Space or U+202F Narrow NBSP).
  • It is U+0009 HORIZONTAL TABULATION.
  • It is U+000A LINE FEED.
  • It is U+000B VERTICAL TABULATION.
  • It is U+000C FORM FEED.
  • It is U+000D CARRIAGE RETURN.
  • It is U+001C FILE SEPARATOR.
  • It is U+001D GROUP SEPARATOR.
  • It is U+001E RECORD SEPARATOR.
  • It is U+001F UNIT SEPARATOR.

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 a whitespace character according to ICU, FALSE if not.

例

例1 さまざまなコードポイントの例

<?php
var_dump(IntlChar::iswhitespace("A"));
var_dump(IntlChar::iswhitespace(" "));
var_dump(IntlChar::iswhitespace("\n"));
var_dump(IntlChar::iswhitespace("\t"));
var_dump(IntlChar::iswhitespace("\u{00A0}"));
?>

上の例の出力は以下となります。

bool(false)
bool(true)
bool(true)
bool(true)
bool(false)

参考