PHP lcfirst() Function

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

Syntax:

lcfirst($string)

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

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

Examples:

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

Input : "chetna agarwal"
Output : chetna agarwal

Below programs illustrate the lcfirst() function in PHP:

Program 1:

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

Output:

zambiatek for zambiatek

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

<?php 
    // PHP program that demonstrates the  
    // use of lcfirst() function when  
    // the first case is already in lowercase 
      
    $str = "chetna agarwal"; 
      
    // already the first character is in lower case  
    // so prints the same string only 
    echo(lcfirst($str));  
?> 