PHP | IntlChar digit() function Last Updated : 11 Jul, 2025 Comments Improve Suggest changes Like Article Like Report The IntlChar::digit() function is an inbuilt function in PHP which is used to get the decimal digit value of a code point for a given radix. This function returns the decimal digit value of the code point in the specified radix. Syntax: int IntlChar::digit( $codepoint, $radix ) Parameters: This function accepts two parameters as mentioned above and described below: $codepoint: The value of $codepoint is an integer or character, which is encoded as a UTF-8 string. $radix: It is optional parameter. Its default value is 10. Return Value: This function returns the number represented by the character in the given radix, or False if there is no value or if the value exceeds the radix. Note: Valid and invalid function argument: If both $radix or $digit is not valid then return NULL. The $radix argument is valid if its value lies between $radix >= 2 and $radix <= 36. The digit is valid if its value is 0 <= digit < radix. The character has a decimal digit value. This characters comes under general category Nd(decimal digit numbers) and a Numeric_Type of Decimal. The character is uppercase Latin letters in between 'A' to 'Z'. Then the value of character is c-'A'+10. The character is lowercase Latin letters in between 'a' to 'z'. Then the value of character is ch-'a'+10. Latin letters from both the ASCII range (0061..007A, 0041..005A) as well as from the Full width ASCII range (FF41..FF5A, FF21..FF3A) are recognized. Below programs illustrate the IntlChar::digit() function in PHP: Program 1: php <?php // PHP code to illustrate IntlChar::digit() // function // Input data is single digit var_dump(IntlChar::digit("6")); // Input data is single digit var_dump(IntlChar::digit("3")); // Input data is character type var_dump(IntlChar::digit("A")); // // Input data is character type with base var_dump(IntlChar::digit("P", 16)); // // Input data is character type with base var_dump(IntlChar::digit("9", 2)); ?> Output: int(6) int(3) bool(false) bool(false) bool(false) Program 2: php <?php // PHP code to illustrate IntlChar::digit() // Declare an array $arr $arr = array("G", "GeeksforGeeks", "^", "1001", "6", "\n", "\n\n", "\t"); // Loop run for every array element foreach ($arr as $val){ // Check each element as code point data var_dump(IntlChar::digit($val)); } ?> Output: bool(false) NULL bool(false) NULL int(6) bool(false) NULL bool(false) Related Articles: PHP | IntlChar::isdigit() Function PHP | IntlChar::forDigit() Function PHP | IntlChar::charDigitValue() Function Reference: https://www.php.net/manual/en/intlchar.digit.php Comment More infoAdvertise with us Next Article PHP | IntlChar::forDigit() Function V vijay_raj Follow Improve Article Tags : Misc Web Technologies PHP PHP-function PHP-Intl +1 More Practice Tags : Misc Similar Reads PHP | IntlChar::forDigit() Function The IntlChar::forDigit() function is an inbuilt function in PHP which is used to determines the character representation for a specific digit in the specified radix. Syntax: int IntlChar::forDigit( $digit, $radix ) Parameters: This function accepts two parameters as mentioned above and described bel 2 min read PHP | IntlChar::forDigit() Function The IntlChar::forDigit() function is an inbuilt function in PHP which is used to determines the character representation for a specific digit in the specified radix. Syntax: int IntlChar::forDigit( $digit, $radix ) Parameters: This function accepts two parameters as mentioned above and described bel 2 min read PHP | IntlChar::forDigit() Function The IntlChar::forDigit() function is an inbuilt function in PHP which is used to determines the character representation for a specific digit in the specified radix. Syntax: int IntlChar::forDigit( $digit, $radix ) Parameters: This function accepts two parameters as mentioned above and described bel 2 min read PHP | IntlChar::charDigitValue() Function The IntlChar::charDigitValue() function is an inbuilt function in PHP which is used to return the decimal digit value from a decimal digit character. Where the general category decimal digit numbers and "Nd" is Numeric_Type of Decimal.Syntax:Â Â int IntlChar::charDigitValue( $codepoint ) Parameters: 2 min read PHP | IntlChar::charDigitValue() Function The IntlChar::charDigitValue() function is an inbuilt function in PHP which is used to return the decimal digit value from a decimal digit character. Where the general category decimal digit numbers and "Nd" is Numeric_Type of Decimal.Syntax:Â Â int IntlChar::charDigitValue( $codepoint ) Parameters: 2 min read PHP | IntlChar::charDigitValue() Function The IntlChar::charDigitValue() function is an inbuilt function in PHP which is used to return the decimal digit value from a decimal digit character. Where the general category decimal digit numbers and "Nd" is Numeric_Type of Decimal.Syntax:Â Â int IntlChar::charDigitValue( $codepoint ) Parameters: 2 min read Like