Added constant 'PROJECT_ROOT' and fixed URLs in scripts/metatags.php and sitemap.php if project is in a subdirectory

Author: luca-vogels

README.md

@@ -36,8 +36,8 @@ e.g. all the native language names.
 Important is that the name of the JSON files should be the language code the file represents e.g. `en.json`, `zh-Hans.json`, etc.  
 Inside the text you can use PHP constants defined by this framework or in the `config.php` file by simply enclosing them in `%%` e.g. 
 `"Some text with a %%MY_CONSTANT%%"`. Variables cannot be referenced inside translations for security reasons.  
-Longer texts like legal notices you can but into separate files inside the `translations` directory and include 
-the content of a fiel using the following `<?php include(TRANSLATIONS.<pathInsideTranslationsDir>); ?>`
+Longer texts like legal notices can be put into separate files inside the `translations` directory and the file content can be included 
+using the following `<?php include(TRANSLATIONS.<pathInsideTranslationsDir>); ?>`
 
 #### `css-components/`
 You can put CSS files into the `css-components` directory, however they can not directly be called from an URL!  
@@ -141,6 +141,7 @@ that can be used for links
 * `ROOT_DEPTH` Integer how deep the requested file is including the language prefix e.g. `en/users/login/index.php` --> `3`
 * `SUPPORTED_LANGUAGES` Array with language codes that were found in the `translations/` directory
 * `$_ENV` Similar to `$_GET` but instead to retrieve to environment variables defined in the `.env` file
+* `PROJECT_ROOT` Path from the document root of the web server `$_SERVER['DOCUMENT_ROOT']` to the root of the project (just '/' if project/framework is directly in document root and not in a subdirectory). Used in scripts/metatags.php for alternate URLs
 
 ### Example files that can be deleted
 The framework also comes with some example files that can be deleted if wanted:

index.php

@@ -171,8 +171,8 @@ function toSupportedLanguage($code){
 
 
 // Trim to actual request
-$base = substr($_SERVER['SCRIPT_NAME'], 0, -strlen(basename($_SERVER['SCRIPT_NAME'])));
-$requestWithQuery = substr($_SERVER['REQUEST_URI'], strlen($base));
+define('PROJECT_ROOT', substr($_SERVER['SCRIPT_NAME'], 0, -strlen(basename($_SERVER['SCRIPT_NAME']))));
+$requestWithQuery = substr($_SERVER['REQUEST_URI'], strlen(PROJECT_ROOT));
 $len = strlen($_SERVER['QUERY_STRING']);
 define('FULL_REQUEST', urldecode((!$len && !empty($requestWithQuery) && $requestWithQuery[-1] !== '?') ? $requestWithQuery : substr($requestWithQuery, 0, -($len+1))));
 $fullRequestLen = strlen(FULL_REQUEST);

scripts/metatags.php

@@ -23,6 +23,6 @@
 <?php
 
     foreach(SUPPORTED_LANGUAGES as $lang)
-        echo '<link rel="alternate" href="https://'.$_SERVER['SERVER_NAME'].'/'.$lang.'/'.REQUEST.'" hreflang="'.$lang.'" />';
+        echo '<link rel="alternate" href="https://'.$_SERVER['SERVER_NAME'].PROJECT_ROOT.$lang.'/'.REQUEST.'" hreflang="'.$lang.'" />';
 
 ?>

sitemap.php

@@ -32,6 +32,7 @@
 $sitemapFile = 'sitemap.xml';
 $fmt = file_exists($sitemapFile) ? filemtime($sitemapFile) : false; // last modified time of generated sitemap file
 if($fmt && (time() + SITEMAP_CACHE_SECONDS) < $fmt){ echo file_get_contents($sitemapFile); exit(); }
+$langs = array_merge(array(''), SUPPORTED_LANGUAGES);
 
 // newly generate sitemap
 $timeFormat = "Y-m-d\TH:i:sP";
@@ -41,8 +42,8 @@
 foreach(SITEMAP_URLS as $path => $info){
     $absPath = VIEWS.$path; if(!file_exists($absPath)) continue; // skip non existing URLs
     $m = filemtime($absPath); $m = ($m ? date($timeFormat, $m) : $today);
-    foreach(SUPPORTED_LANGUAGES as $lang){
-        $c .= "\t<url>\n\t\t<loc>https://".$domain."/".$lang."/".$path."</loc>\n\t\t<lastmod>".$m."</lastmod>\n";
+    foreach($langs as $lang){
+        $c .= "\t<url>\n\t\t<loc>https://".$domain.PROJECT_ROOT.$lang.(empty($lang) ? '' : '/').$path."</loc>\n\t\t<lastmod>".$m."</lastmod>\n";
         $c .= "\t\t<priority>".$info[0]."</priority>\n\t\t<changefreq>".$info[1]."</changefreq>\n\t</url>\n";
     }
 }