(PHP 7)
IntlChar::charMirror — Get the "mirror-image" character for a code point
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.
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.
The return type will be integer unless the code point was passed as a UTF-8 string, in which case a string will be returned.
Example #1 Testing different code points
<?php
var_dump(IntlChar::charMirror("A"));
var_dump(IntlChar::charMirror("<"));
var_dump(IntlChar::charMirror("("));
?>
以上例程会输出：
string(1) "A" string(1) ">" string(2) ")"
IntlChar::PROPERTY_BIDI_MIRRORED