PHP lcfirst() Function

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 geeks"
Output : geeks for geeks

Input : "chetna agarwal"
Output : chetna agarwal

Below programs illustrate the lcfirst() function in PHP: Program 1: php

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

Output:

geeks for geeks

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

<?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)); 
?>

Output:

chetna agarwal

Reference: http://php.net/manual/en/function.lcfirst.php