w3resource

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

Previous: strstr
Next: strtoupper



PHP: Tips of the Day

Get the full URL in PHP

Have a look at $_SERVER['REQUEST_URI'], i.e.

Example:

$actual_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

(Note that the double quoted string syntax is perfectly correct)

If you want to support both HTTP and HTTPS, you can use

$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

Editor's note: using this code has security implications. The client can set HTTP_HOST and REQUEST_URI to any arbitrary value it wants.

Ref : https://bit.ly/2ZYItNJ