Find Current URL with PHP

The full URL to a page comes in three parts: The domain name, the path to the file then the filename, and the query string. For example, take the URL The three parts of this are:

1. The domain name:
2. The path to the page: /example/page.php
3. The query string: name=Bob

So how do you find it all out with your own PHP scripts?

All of the information we need is stored in the $_SERVER array, which is accessible from anywhere in your PHP script (and as such is called a superglobal variable), it works like a normal array and the keys we wish to retrieve the values of are ‘HTTP_HOST’, ‘SCRIPT_NAME’ and ‘QUERY_STRING’ for the three different parts of the url. Alternatively, if we don’t need to have the path to the page and the query string seperate, we can use ‘REQUEST_URI’.

The following code should let you find it:

$http = ($_SERVER['HTTPS'] ? 'https://' : 'http://');
// find out the domain:
$domain = $_SERVER['HTTP_HOST'];
// find out the path to the current file:
$path = $_SERVER['SCRIPT_NAME'];
// find out the QueryString:
$queryString = $_SERVER['QUERY_STRING'];
// put it all together:
$url = $http. $domain . $path . "?" . $queryString;
echo "The current URL is: " . $url . "";

// An alternative way is to use REQUEST_URI instead of both
// SCRIPT_NAME and QUERY_STRING, if you don't need them seperate:</code></div>
$url2 = $http . $domain . $_SERVER['REQUEST_URI'];
echo "The alternative way: " . $url2;

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