The IntlChar::charDirection() function is an inbuilt function in PHP which is used to get the bidirectional category value for a code point. It returns the bidirectional category value for the code point, which is used in the Unicode bidirectional algorithm.
Syntax:
int IntlChar::charDirection ( $codepoint )
Parameters: This function accepts a single parameter $codepoint which is mandatory. The $codepoint value is an integer values or character, which is encoded as a UTF-8 string.
Return Value: This function returns the bidirectional category value which are listed below:
- 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
Below programs illustrate the IntlChar::charDirection() function in PHP:
Program 1:
<?php   // PHP code to illustrate IntlChar::charDirection() // function   // Input data is character type var_dump(IntlChar::charDirection("A") ===            IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT);   // Input data is unicode character var_dump(IntlChar::charDirection("\u{05E9}") ===            IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT);   // Input data is character type var_dump(IntlChar::charDirection("+") === IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_SEPARATOR);   // Input data is character type var_dump(IntlChar::charDirection(".") ===   IntlChar::CHAR_DIRECTION_COMMON_NUMBER_SEPARATOR);   // Input data is string type var_dump(IntlChar::charDirection("ABC") ===             IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT);   // Input data is character type var_dump(IntlChar::charDirection("c") ===             IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT);   // Input data is character type var_dump(IntlChar::charDirection("O") ===             IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT); ?> |
Output:
bool(true) bool(true) bool(true) bool(true) bool(false) bool(false) bool(true)
Program 2:
<?php   // PHP code to illustrate IntlChar::charDirection() // function   // Input data is character type var_dump(IntlChar::charDirection("A"));   // Input data is unicode character var_dump(IntlChar::charDirection("\u{05E9}"));   // Input data is character type var_dump(IntlChar::charDirection("+"));   // Input data is character type var_dump(IntlChar::charDirection("."));   // Input data is string type var_dump(IntlChar::charDirection("ABC"));   // Input data is character type var_dump(IntlChar::charDirection("c"));   // Input data is character type var_dump(IntlChar::charDirection("O")); ?> |
Output:
int(0) int(1) int(3) int(6) NULL int(0) int(0)
Related Articles:
Reference: http://php.net/manual/en/intlchar.chardirection.php
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