How do I get the base URL with PHP? - php

Question

I am using XAMPP on Windows Vista. In my development, I have http://127.0.0.1/test_website/.
How do I get http://127.0.0.1/test_website/ with PHP?
I tried something like these, but none of them worked.
echo dirname(__FILE__)
or
echo basename(__FILE__);
etc.

Answer 1

Try this:
<?php echo "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; ?>
Learn more about the $_SERVER predefined variable.
If you plan on using https, you can use this:
function url(){
return sprintf(
"%s://%s%s",
isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http',
$_SERVER['SERVER_NAME'],
$_SERVER['REQUEST_URI']
);
}
echo url();
#=> http://127.0.0.1/foo
Per this answer, please make sure to configure your Apache properly so you can safely depend on SERVER_NAME.
<VirtualHost *>
ServerName example.com
UseCanonicalName on
</VirtualHost>
NOTE: If you're depending on the HTTP_HOST key (which contains user input), you still have to make some cleanup, remove spaces, commas, carriage return, etc. Anything that is not a valid character for a domain. Check the PHP builtin parse_url function for an example.

Answer 2

Function adjusted to execute without warnings:
function url(){
if(isset($_SERVER['HTTPS'])){
$protocol = ($_SERVER['HTTPS'] && $_SERVER['HTTPS'] != "off") ? "https" : "http";
}
else{
$protocol = 'http';
}
return $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
}

Answer 3

Fun 'base_url' snippet!
if (!function_exists('base_url')) {
function base_url($atRoot=FALSE, $atCore=FALSE, $parse=FALSE){
if (isset($_SERVER['HTTP_HOST'])) {
$http = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off' ? 'https' : 'http';
$hostname = $_SERVER['HTTP_HOST'];
$dir = str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);
$core = preg_split('#/#', str_replace($_SERVER['DOCUMENT_ROOT'], '', realpath(dirname(__FILE__))), NULL, PREG_SPLIT_NO_EMPTY);
$core = $core[0];
$tmplt = $atRoot ? ($atCore ? "%s://%s/%s/" : "%s://%s/") : ($atCore ? "%s://%s/%s/" : "%s://%s%s");
$end = $atRoot ? ($atCore ? $core : $hostname) : ($atCore ? $core : $dir);
$base_url = sprintf( $tmplt, $http, $hostname, $end );
}
else $base_url = 'http://localhost/';
if ($parse) {
$base_url = parse_url($base_url);
if (isset($base_url['path'])) if ($base_url['path'] == '/') $base_url['path'] = '';
}
return $base_url;
}
}
Use as simple as:
// url like: http://stackoverflow.com/questions/2820723/how-to-get-base-url-with-php
echo base_url(); // will produce something like: http://stackoverflow.com/questions/2820723/
echo base_url(TRUE); // will produce something like: http://stackoverflow.com/
echo base_url(TRUE, TRUE); || echo base_url(NULL, TRUE); // will produce something like: http://stackoverflow.com/questions/
// and finally
echo base_url(NULL, NULL, TRUE);
// will produce something like:
// array(3) {
// ["scheme"]=>
// string(4) "http"
// ["host"]=>
// string(12) "stackoverflow.com"
// ["path"]=>
// string(35) "/questions/2820723/"
// }

Answer 4

$base_url="http://".$_SERVER['SERVER_NAME'].dirname($_SERVER["REQUEST_URI"].'?').'/';
Usage:
print "<script src='{$base_url}js/jquery.min.js'/>";

Answer 5

$modifyUrl = parse_url($url);
print_r($modifyUrl)
Its just simple to use
Output :
Array
(
[scheme] => http
[host] => aaa.bbb.com
[path] => /
)

Answer 6

I think the $_SERVER superglobal has the information you're looking for. It might be something like this:
echo $_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']
You can see the relevant PHP documentation here.

Answer 7

Try the following code :
$config['base_url'] = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on") ? "https" : "http");
$config['base_url'] .= "://".$_SERVER['HTTP_HOST'];
$config['base_url'] .= str_replace(basename($_SERVER['SCRIPT_NAME']),"",$_SERVER['SCRIPT_NAME']);
echo $config['base_url'];
The first line is checking if your base url used http or https then the second line is use to get the hostname .Then the third line use to get only base folder of your site ex. /test_website/

Answer 8

The following code will reduce the problem to check the protocol.
The $_SERVER['APP_URL'] will display the domain name with the protocol
$_SERVER['APP_URL'] will return protocol://domain ( eg:-http://localhost)
$_SERVER['REQUEST_URI'] for remaining parts of the url such as /directory/subdirectory/something/else
$url = $_SERVER['APP_URL'].$_SERVER['REQUEST_URI'];
The output would be like this
http://localhost/directory/subdirectory/something/else

Answer 9

Simple and easy trick:
$host = $_SERVER['HTTP_HOST'];
$host_upper = strtoupper($host);
$path = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
$baseurl = "http://" . $host . $path . "/";
URL looks like this: http://example.com/folder/

Answer 10

You can do it like this, but sorry my english is not good enough.
First, get home base url with this simple code..
I've tested this code on my local server and public and the result is good.
<?php
function home_base_url(){
// first get http protocol if http or https
$base_url = (isset($_SERVER['HTTPS']) &&
$_SERVER['HTTPS']!='off') ? 'https://' : 'http://';
// get default website root directory
$tmpURL = dirname(__FILE__);
// when use dirname(__FILE__) will return value like this "C:\xampp\htdocs\my_website",
//convert value to http url use string replace,
// replace any backslashes to slash in this case use chr value "92"
$tmpURL = str_replace(chr(92),'/',$tmpURL);
// now replace any same string in $tmpURL value to null or ''
// and will return value like /localhost/my_website/ or just /my_website/
$tmpURL = str_replace($_SERVER['DOCUMENT_ROOT'],'',$tmpURL);
// delete any slash character in first and last of value
$tmpURL = ltrim($tmpURL,'/');
$tmpURL = rtrim($tmpURL, '/');
// check again if we find any slash string in value then we can assume its local machine
if (strpos($tmpURL,'/')){
// explode that value and take only first value
$tmpURL = explode('/',$tmpURL);
$tmpURL = $tmpURL[0];
}
// now last steps
// assign protocol in first value
if ($tmpURL !== $_SERVER['HTTP_HOST'])
// if protocol its http then like this
$base_url .= $_SERVER['HTTP_HOST'].'/'.$tmpURL.'/';
else
// else if protocol is https
$base_url .= $tmpURL.'/';
// give return value
return $base_url;
}
?>
// and test it
echo home_base_url();
output will like this :
local machine : http://localhost/my_website/ or https://myhost/my_website
public : http://www.my_website.com/ or https://www.my_website.com/
use home_base_url function at index.php of your website and define it
and then you can use this function to load scripts, css and content via url like
<?php
echo '<script type="text/javascript" src="'.home_base_url().'js/script.js"></script>'."\n";
?>
will create output like this :
<script type="text/javascript" src="http://www.my_website.com/js/script.js"></script>
and if this script works fine,,!

Answer 11

I found this on
http://webcheatsheet.com/php/get_current_page_url.php
Add the following code to a page:
<?php
function curPageURL() {
$pageURL = 'http';
if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
$pageURL .= "://";
if ($_SERVER["SERVER_PORT"] != "80") {
$pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
} else {
$pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
}
return $pageURL;
}
?>
You can now get the current page URL using the line:
<?php
echo curPageURL();
?>
Sometimes it is needed to get the page name only. The following example shows how to do it:
<?php
function curPageName() {
return substr($_SERVER["SCRIPT_NAME"],strrpos($_SERVER["SCRIPT_NAME"],"/")+1);
}
echo "The current page name is ".curPageName();
?>

Answer 12

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

Answer 13

Try this. It works for me.
/*url.php file*/
trait URL {
private $url = '';
private $current_url = '';
public $get = '';
function __construct()
{
$this->url = $_SERVER['SERVER_NAME'];
$this->current_url = $_SERVER['REQUEST_URI'];
$clean_server = str_replace('', $this->url, $this->current_url);
$clean_server = explode('/', $clean_server);
$this->get = array('base_url' => "/".$clean_server[1]);
}
}
Use like this:
<?php
/*
Test file
Tested for links:
http://localhost/index.php
http://localhost/
http://localhost/index.php/
http://localhost/url/index.php
http://localhost/url/index.php/
http://localhost/url/ab
http://localhost/url/ab/c
*/
require_once 'sys/url.php';
class Home
{
use URL;
}
$h = new Home();
?>
Base

Answer 14

This is the best method i think so.
$base_url = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != "off") ? "https" : "http");
$base_url .= "://".$_SERVER['HTTP_HOST'];
$base_url .= str_replace(basename($_SERVER['SCRIPT_NAME']),"",$_SERVER['SCRIPT_NAME']);
echo $base_url;

Answer 15

The following solution will work even when the current url has request query string.
<?php
function baseUrl($file=__FILE__){
$currentFile = array_reverse(explode(DIRECTORY_SEPARATOR,$file))[0];
if(!empty($_SERVER['QUERY_STRING'])){
$currentFile.='?'.$_SERVER['QUERY_STRING'];
}
$protocol = $_SERVER['PROTOCOL'] == isset($_SERVER['HTTPS']) &&
!empty($_SERVER['HTTPS']) ? 'https' : 'http';
$url = "$protocol://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$url = str_replace($currentFile, '', $url);
return $url;
}
The calling file will provide the __FILE__ as param
<?= baseUrl(__FILE__)?>

Answer 16

Here's one I just put together that works for me. It will return an array with 2 elements. The first element is everything before the ? and the second is an array containing all of the query string variables in an associative array.
function disectURL()
{
$arr = array();
$a = explode('?',sprintf(
"%s://%s%s",
isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http',
$_SERVER['SERVER_NAME'],
$_SERVER['REQUEST_URI']
));
$arr['base_url'] = $a[0];
$arr['query_string'] = [];
if(sizeof($a) == 2)
{
$b = explode('&', $a[1]);
$qs = array();
foreach ($b as $c)
{
$d = explode('=', $c);
$qs[$d[0]] = $d[1];
}
$arr['query_string'] = (count($qs)) ? $qs : '';
}
return $arr;
}
Note: This is an expansion of the answer provided by maček above. (Credit where credit is due.)

Answer 17

Edited at #user3832931 's answer to include server port..
to form URLs like 'https://localhost:8000/folder/'
$base_url="http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER["REQUEST_URI"].'?').'/';

Answer 18

Try using: $_SERVER['SERVER_NAME'];
I used it to echo the base url of my site to link my css.
<link href="//<?php echo $_SERVER['SERVER_NAME']; ?>/assets/css/your-stylesheet.css" rel="stylesheet" type="text/css">
Hope this helps!

Answer 19

$some_variable = substr($_SERVER['PHP_SELF'], 0, strrpos($_SERVER['REQUEST_URI'], "/")+1);
and you get
something like
lalala/tralala/something/

Answer 20

In my case I needed the base URL similar to the RewriteBasecontained in the .htaccess file.
Unfortunately simply retrieving the RewriteBase from the .htaccess file is impossible with PHP. But it is possible to set an environment variable in the .htaccess file and then retrieve that variable in PHP. Just check these bits of code out:
.htaccess
SetEnv BASE_PATH /
index.php
Now I use this in the base tag of the template (in the head section of the page):
<base href="<?php echo ! empty( getenv( 'BASE_PATH' ) ) ? getenv( 'BASE_PATH' ) : '/'; ?>"/>
So if the variable was not empty, we use it. Otherwise fallback to / as default base path.
Based on the environment the base url will always be correct. I use / as the base url on local and production websites. But /foldername/ for on the staging environment.
They all had their own .htaccess in the first place because the RewriteBase was different. So this solution works for me.

Answer 21

Currently this is the proper answer:
$baseUrl = $_SERVER['REQUEST_SCHEME'];
$baseUrl .= '://'.$_SERVER['HTTP_HOST'];
You might want to add a / to the end. Or you might want to add
$baseUrl .= $_SERVER['REQUEST_URI'];
so in total copy paste
$baseUrl = $_SERVER['REQUEST_SCHEME']
. '://' . $_SERVER['HTTP_HOST']
. $_SERVER['REQUEST_URI'];

Answer 22

function server_url(){
$server ="";
if(isset($_SERVER['SERVER_NAME'])){
$server = sprintf("%s://%s%s", isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http', $_SERVER['SERVER_NAME'], '/');
}
else{
$server = sprintf("%s://%s%s", isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http', $_SERVER['SERVER_ADDR'], '/');
}
print $server;
}

Answer 23

I had the same question as the OP, but maybe a different requirement. I created this function...
/**
* Get the base URL of the current page. For example, if the current page URL is
* "https://example.com/dir/example.php?whatever" this function will return
* "https://example.com/dir/" .
*
* #return string The base URL of the current page.
*/
function get_base_url() {
$protocol = filter_input(INPUT_SERVER, 'HTTPS');
if (empty($protocol)) {
$protocol = "http";
}
$host = filter_input(INPUT_SERVER, 'HTTP_HOST');
$request_uri_full = filter_input(INPUT_SERVER, 'REQUEST_URI');
$last_slash_pos = strrpos($request_uri_full, "/");
if ($last_slash_pos === FALSE) {
$request_uri_sub = $request_uri_full;
}
else {
$request_uri_sub = substr($request_uri_full, 0, $last_slash_pos + 1);
}
return $protocol . "://" . $host . $request_uri_sub;
}
...which, incidentally, I use to help create absolute URLs that should be used for redirecting.

Answer 24

Just test and get the result.
// output: /myproject/index.php
$currentPath = $_SERVER['PHP_SELF'];
// output: Array ( [dirname] => /myproject [basename] => index.php [extension] => php [filename] => index )
$pathInfo = pathinfo($currentPath);
// output: localhost
$hostName = $_SERVER['HTTP_HOST'];
// output: http://
$protocol = strtolower(substr($_SERVER["SERVER_PROTOCOL"],0,5))=='https://'?'https://':'http://';
// return: http://localhost/myproject/
echo $protocol.$hostName.$pathInfo['dirname']."/";

Answer 25

$http = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'? "https://" : "http://";
$dir = str_replace(basename($_SERVER['SCRIPT_NAME']), '',$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME']);
echo $url = $http . $dir;
// echo $url = $http . $_SERVER["SERVER_NAME"] . $_SERVER['REQUEST_URI'];