Absolute vs Relative Path

1. Objectives

1. add support for relative path
2. option to set only absolute path, enforce canonical URL
3. option to auto set relative path/absolute URL
   • always adjusts to current environment
     • to run under multiple domains

1. added option to switch between absolute and relative links^[link1]
2. set canonical context for feeds^[link2]

• parse_url & unicode

1. cookiesURL
2. redirect
3. canonical
4. sitemap
5. XML feeds
6. email content

2. Config

• base_url (absolute)
• base_path (relative)
• base_path (canonical ? base_url : base_path)

<?php

'base_url' => ($_SERVER['SERVER_PORT'] == 443
                ? 'https'
                : 'http'
            ) . '://' .
            $_SERVER['SERVER_NAME'] .
            (!in_array($_SERVER['SERVER_PORT'], [80, 443])
                ? ':' . $_SERVER['SERVER_PORT']
                : ''
            ) .
            (($path = preg_replace('/\/\//', '\/', trim(strtr(dirname($_SERVER['SCRIPT_NAME']), '\\', '/'), '/')))
                ? '/' . $path
                : ''
            ) . '/' ,
	

2.1. Get base URL

<?php

// returns the full absolute or relative URL to the directory where WackoWiki is installed
function get_base_url($absolute = null)
{
    $base_url = ($_SERVER['SERVER_PORT'] == 443
            ? 'https'
            : 'http'
        ) . '://' .
        $_SERVER['SERVER_NAME'] .
        (!in_array($_SERVER['SERVER_PORT'], [80, 443])
            ? ':' . $_SERVER['SERVER_PORT']
            : ''
        );
    $base_path = (($path = preg_replace('/\/\//', '\/', trim(strtr(dirname($_SERVER['SCRIPT_NAME']), '\\', '/'), '/')))
            ? '/' . $path
            : ''
        ) . '/';

    return ($absolute ? $base_url : '') . $base_path;
}
	

3. Relative URLs

 'base_url' => '/wiki/',	

4. Absolute URLs

 'base_url' => 'http://example.com/wiki/',	

$base_url = 'http[s]://example.com/wiki/';
$base_path = '/wiki/';	

5. Canonical context

• format($page['body_r'], 'post_wacko') -> renders content with canonical links
• href() -> sets link absolute
• link() -> sets path for global files absolute

6. Resources

• RFC 2396 - Uniform Resource Identifiers (URI): Generic Syntax^[link3]
• Absolute vs relative URLs^[link4]