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PHP | IntlChar charDirection() Function

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 code point, which is used in the Unicode bidirectional algorithm.

Syntax:

int IntlChar::charDirection ( $codepoint )

Parameters: This function accepts 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);
  
// Iput 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"));
  
// Iput 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



This article is attributed to GeeksforGeeks.org

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