How to get full address bar URL inside PHP script ?

We can use PHP SERVER variables to get full address bar URL inside PHP script.

Simple way

<?php
    $currenturl = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
    echo $currenturl;
?>

<?php

$currenturl = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];

echo $currenturl;

With Protocol and port …

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

    echo currenturl();
?>

<?php

function currenturl() {

$protocol_suffix = empty($_SERVER["HTTPS"]) ? '' : ($_SERVER["HTTPS"] == "on") ? "s" : "";

$protocol = strleft(strtolower($_SERVER["SERVER_PROTOCOL"]), "/").$protocol_suffix;

$port = ($_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));

}

echo currenturl();

Please refer http://php.net/manual/en/reserved.variables.server.php for PHP SERVER variables.