w3resource
PHP Tutorial

PHP: strtolower() function

Description

The strtolower() function is used to convert all alphabetic characters of a string to lowercase.

Version:

(PHP 4 and above)

Syntax:

strtolower(string1)

Parameter:

Name Description Required /
Optional
Type
string1 The input string. Required string

Return value:

Returns the lowercased string.

Value Type: string.

Pictorial Presentation

string_strtolower

Example:

<?php
$string1="WELCOME TO W3RESOURCE.COM";
echo strtolower($string1); 
?>

Output:

welcome to w3resource.com

View the example in the browser

See also

PHP Function Reference

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