PHP | IntlChar::isUAlphabetic() Function Last Updated : 11 Jul, 2025 Comments Improve Suggest changes Like Article Like Report The IntlChar::isUAlphabetic() function is an inbuilt function in PHP which is used to check whether the given input character is an Alphabetic Unicode character or not. Syntax: bool IntlChar::isUAlphabetic( $codepoint ) Parameters: This function accepts a single parameter $codepoint which is mandatory. The input parameter is an integer or character, which is encoded as a UTF-8 string. Return Value: If $codepoint is an Alphabetic Unicode Character then returns True, otherwise return False. Below programs illustrate the IntlChar::isUAlphabetic() function in PHP: Program 1: PHP <?php // PHP program to illustrate // IntlChar::isUAlphabetic() function // Input data is character type var_dump(IntlChar::isUAlphabetic("G")); // Input data is string type var_dump(IntlChar::isUAlphabetic("B\n")); // Input data is string type var_dump(IntlChar::isUAlphabetic("Geeksforgeeks")); // Input data is number(multiple digit) var_dump(IntlChar::isUAlphabetic("2018")); // Input data is single digit var_dump(IntlChar::isUAlphabetic("9")); // Input data is floating point number var_dump(IntlChar::isUAlphabetic("10.99")); ?> Output: bool(true) NULL NULL NULL bool(false) NULL Program 2: PHP <?php // PHP code to illustrate IntlChar::isUAlphabetic() // Declare an array $arr $arr = array("Z", "291", "^", " ", "*", "Sudo Placement"); // Loop run for every array element foreach ($arr as $val){ // Check each element as code point data var_dump(IntlChar::isUAlphabetic($val)); } ?> Output: bool(true) NULL bool(false) NULL bool(false) NULL Related Articles: PHP | IntlChar::isUUppercase() FunctionPHP | IntlChar::charDigitValue() FunctionPHP | IntlChar::isspace() FunctionPHP | IntlChar::isWhitespace() Function Reference: https://www.php.net/manual/en/intlchar.isualphabetic.php Comment More infoAdvertise with us Next Article PHP | IntlChar isgraph() Function J jit_t Follow Improve Article Tags : Web Technologies PHP PHP-function PHP-Intl Similar Reads PHP | IntlChar::isalpha() Function The IntlChar::isalpha() function is an inbuilt function in PHP which is used to check the given input is an alphanumeric character or not. Syntax: bool IntlChar::isalpha( $codepoint ) Parameters: The IntlChar::isalpha() function accept single parameter $codepoint which is mandatory. The input parame 1 min read PHP | IntlChar::isalpha() Function The IntlChar::isalpha() function is an inbuilt function in PHP which is used to check the given input is an alphanumeric character or not. Syntax: bool IntlChar::isalpha( $codepoint ) Parameters: The IntlChar::isalpha() function accept single parameter $codepoint which is mandatory. The input parame 1 min read PHP | IntlChar isgraph() Function The IntlChar::isgraph() function is an inbuilt function in PHP which is used to check the code point is a graphic character or not. It returns True for all characters except those with general categories Cc(control codes), Cf(format controls), Cs(surrogates), Cn(unassigned), and Z(separators). Synta 2 min read PHP | IntlChar isgraph() Function The IntlChar::isgraph() function is an inbuilt function in PHP which is used to check the code point is a graphic character or not. It returns True for all characters except those with general categories Cc(control codes), Cf(format controls), Cs(surrogates), Cn(unassigned), and Z(separators). Synta 2 min read PHP | IntlChar::isspace() Function The IntlChar::isspace() function is an inbuilt function in PHP which is used to check whether the given input character is a space character or not. Syntax: bool IntlChar::isspace( $codepoint ) Parameters: This function accepts a single parameter $codepoint which is mandatory. The input parameter is 2 min read PHP | IntlChar::isspace() Function The IntlChar::isspace() function is an inbuilt function in PHP which is used to check whether the given input character is a space character or not. Syntax: bool IntlChar::isspace( $codepoint ) Parameters: This function accepts a single parameter $codepoint which is mandatory. The input parameter is 2 min read Like