PHP | IntlChar::isUUppercase() Function

The IntlChar::isUUppercase() function is an inbuilt function in PHP which is used to check whether the given input character is an Uppercase Unicode character or not. 

Syntax:  

bool IntlChar::isUUppercase( $codepoint )

Parameters: This function accepts a single parameter $codepoint which is mandatory. The input parameter is a character value, which is encoded as a UTF-8 string.

Return Value: If $codepoint is an UpperCase Unicode character then it returns True, otherwise return False.

Note:The function is different from IntlChar::isupper() function.

Below programs illustrate the IntlChar::isUUppercase() Function in PHP:

Program 1:  

<?php
// PHP code to illustrate IntlChar::isUUppercase
// function
 
// Input data is Capital letter or character 
var_dump(IntlChar::isUUppercase("M"));
 
// Input data is small letter or character 
var_dump(IntlChar::isUUppercase("m"));
 
// Input data is Capital letter string
var_dump(IntlChar::isUUppercase("GEEKS"));
 
// Input data is small letter string
var_dump(IntlChar::isUUppercase("geeks"));
 
// Input data is integer value
var_dump(IntlChar::isUUppercase("7"));
?>

Output: 

bool(true) 
bool(false) 
NULL 
NULL 
bool(false) 

Program 2: 

<?php
// PHP code to IntlChar::isUUppercase
// function
 
// Declare an array $arr
$arr = array("X", "ReportBug", "^", "c", "\t");
 
// Loop run for every array element
foreach ($arr as $val) {
     
    // Check each element of array
    var_dump(IntlChar::isUUppercase($val));
}
?>

Output: 

bool(true) 
NULL 
bool(false) 
bool(false) 
bool(false)  

Related Articles:  

• PHP | IntlChar::isupper() Function
• PHP | IntlChar::isxdigit() Function
• PHP | IntlChar::islower() Function

Reference: https://www.php.net/manual/en/intlchar.isuuppercase