PHP | IntlChar::isupper() Function

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

Syntax:

bool IntlChar::isupper( $codepoint )

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

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

Below programs illustrate the IntlChar::isupper() function in PHP:

Program 1:

<?php 
// PHP code to illustrate IntlChar::isupper() 
// function 
    
// Input data is character type 
var_dump(IntlChar::isupper("G")); 
echo "<br>"; 
   
// Input data is control character 
var_dump(IntlChar::isupper("	")); 
echo "<br>"; 
   
// Input data is string type  
var_dump(IntlChar::isupper("Geeksforgeeks")); 
echo "<br>"; 
    
// Input data is number type 
var_dump(IntlChar::isupper("2018")); 
echo "<br>"; 
    
// Input data is single digit 
var_dump(IntlChar::isupper("5")); 
echo "<br>"; 
  
?> 

/div>

Output:

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

Note: If String and Numbers (except single digit number) are used as a parameter then it returns NULL.

Program 2:

<?php 
// PHP code to illustrate isupper() 
       
// Declare an array $arr 
$arr = array("A","u{0041}","@","0","
","123","Geeks"); 
  
// u{0041} is ASCII value of 'A' 
  
// Loop run for every array element 
foreach ($arr as $val){ 
          
    // Check each element as code point data 
    var_dump(IntlChar::isupper($val)); 
    echo "<br>"; 
} 
?> 

Output:

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

Related Articles:

Reference: http://php.net/manual/en/intlchar.isupper.php

PHP | IntlChar::isupper() Function

tags:

You Might Also Like

leave a comment

0 Comments

Subscribe to Our Newsletter

Top Followed books