IntlChar::charDirection

(PHP 7)

Get bidirectional category value for a code point

public static int IntlChar::charDirection ( mixed $codepoint )

Returns the bidirectional category value for the code point, which is used in the » Unicode bidirectional algorithm (UAX #9).

Note:

Some unassigned code points have bidi values of R or AL because they are in blocks that are reserved for Right-To-Left scripts.

Parameters:

codepoint

The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

Returns:

The bidirectional category value; one of the following constants:

IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT
IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER
IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_SEPARATOR
IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_TERMINATOR
IntlChar::CHAR_DIRECTION_ARABIC_NUMBER
IntlChar::CHAR_DIRECTION_COMMON_NUMBER_SEPARATOR
IntlChar::CHAR_DIRECTION_BLOCK_SEPARATOR
IntlChar::CHAR_DIRECTION_SEGMENT_SEPARATOR
IntlChar::CHAR_DIRECTION_WHITE_SPACE_NEUTRAL
IntlChar::CHAR_DIRECTION_OTHER_NEUTRAL
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_EMBEDDING
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_OVERRIDE
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_ARABIC
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_EMBEDDING
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_OVERRIDE
IntlChar::CHAR_DIRECTION_POP_DIRECTIONAL_FORMAT
IntlChar::CHAR_DIRECTION_DIR_NON_SPACING_MARK
IntlChar::CHAR_DIRECTION_BOUNDARY_NEUTRAL
IntlChar::CHAR_DIRECTION_FIRST_STRONG_ISOLATE
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_ISOLATE
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_ISOLATE
IntlChar::CHAR_DIRECTION_POP_DIRECTIONAL_ISOLATE
IntlChar::CHAR_DIRECTION_CHAR_DIRECTION_COUNT

Examples:

Testing different code points

<?php
var_dump(IntlChar::charDirection("A") === IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT);
var_dump(IntlChar::charDirection("\u{05E9}") === IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT);
var_dump(IntlChar::charDirection("+") === IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_SEPARATOR);
var_dump(IntlChar::charDirection(".") === IntlChar::CHAR_DIRECTION_COMMON_NUMBER_SEPARATOR);
?>

The above example will output:

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

Links:

http://php.net/manual/en/intlchar.chardirection.php

doc_php

2016-02-24 15:58:07

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