PHP | IntlChar::isUAlphabetic() Function
Last Updated :
11 Jul, 2025
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
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Reference: https://www.php.net/manual/en/intlchar.isualphabetic.php