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