PHP: How to Get the Current Page URL

PHP programmers need sometimes current page URL to show or save in database. There is no built-in function exist in PHP to get current page url. I made a function to show current page URL.

I used the following built-in $_SERVER array in this function. If you want to show all element return by $_SERVER array then you can use these commands.

<?php
   echo "<pre>";
   print_r ($_SERVER);
   echo "</pre>";
?>

All elements by $_SERVER will appear in your browser window.

I made function which returns current page URL:

<?php
function currenturl() { 
   $s = empty($_SERVER["HTTPS"]) ? '' : ($_SERVER["HTTPS"] == "on") ? "s" : ""; 
   $protocol = strleft(strtolower($_SERVER["SERVER_PROTOCOL"]), "/").$s;
   $port = ($_SERVER["SERVER_PORT"] == "80") ? "" : (":".$_SERVER["SERVER_PORT"]); 
   return $protocol."://".$_SERVER['SERVER_NAME'].$port.$_SERVER['REQUEST_URI'];
}

function strleft($s1, $s2) { 
	return substr($s1, 0, strpos($s1, $s2));
}
?>

Example using function above:

<?php
   echo currenturl();
?>

Get current URL in php