PHP ucfirst() Function

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The ucfirst() function is a built-in function in PHP which takes a string as an argument and returns the string with the first character in Upper Case and all other characters remain unchanged.

Syntax:

ucfirst($string)

Parameter: The function accepts only one parameter $string which is mandatory. This parameter represents the string whose first character will be changed to uppercase.

Return Value: The function returns the same string only by changing the first character to upper case of the passed argument $string.

Examples:

Input : "zambiatek for zambiatek"
Output : Geeks for zambiatek

Input : "Chetna Agarwal"
Output : Chetna Agarwal

Below programs illustrate the ucfirst() function in PHP:

Program 1: The program below demonstrates the use of ucfirst() function.

<?php 
    // PHP program that demonstrates the  
    // use of ucfirst() function  
      
    $str = "zambiatek for zambiatek"; 
      
    // converts the first case to upper case  
    // and prints the string 
    echo(ucfirst($str));  
?> 

Output:

Geeks for zambiatek

Program 2: The program below demonstrates the use of ucfirst() function when the starting character is in upper-case.

<?php 
    // PHP program that demonstrates the  
    // use of ucfirst() function when  
    // the first case is already in uppercase 
      
    $str = "Chetna Agarwal"; 
      
    // already the first character is in upper case  
    // so prints the same string only 
    echo(ucfirst($str));  
?> 