IntlChar::charMirror

(PHP 7)

IntlChar::charMirror — Get the "mirror-image" character for a code point

説明

public static IntlChar::charMirror ( mixed $codepoint ) : mixed

Maps the specified character to a "mirror-image" character.

For characters with the Bidi_Mirrored property, implementations sometimes need a "poor man's" mapping to another Unicode character (code point) such that the default glyph may serve as the mirror-image of the default glyph of the specified character. This is useful for text conversion to and from codepages with visual order, and for displays without glyph selection capabilities.

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 another Unicode code point that may serve as a mirror-image substitute, or codepoint itself if there is no such mapping or codepoint does not have the Bidi_Mirrored property.

戻り値の型は integer になります。ただし、コードポイントを UTF-8 文字列で渡した場合は別で、その場合の返り値の型は文字列になります。

例

例1 さまざまなコードポイントの例

<?php
var_dump(IntlChar::charMirror("A"));
var_dump(IntlChar::charMirror("<"));
var_dump(IntlChar::charMirror("("));
?>

上の例の出力は以下となります。

string(1) "A"
string(1) ">"
string(2) ")"

参考

  • IntlChar::isMirrored() - Check if code point has the Bidi_Mirrored property
  • IntlChar::PROPERTY_BIDI_MIRRORED