Actualización

custompages/language.inc.php

@@ -0,0 +1,53 @@
+<?php
+/* For licensing terms, see /license.txt */
+/**
+ * CustomPages : Browser language detection
+ * Include this file in your custom page if you want to set the language variable of the Chamilo session
+ * to the best pick according to the visitor's browser's options.
+ * 2011, Jean-Karim Bockstael, CBlue <jeankarim@cblue.be>
+ * This requires the Chamilo system to be initialized
+ * (note that it's easier to do the following include in the parent page).
+ *
+ * @package chamilo.custompages
+ */
+/**
+ * Returns the best match between available languages and visitor preferences.
+ *
+ * @return string the best match as 2-chars code, null when none match
+ */
+function get_preferred_language($available_langs)
+{
+    // Parsing the Accept-languages HTTP header
+    $langs = [];
+    foreach (explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']) as $httplang) {
+        $rawlang = explode(';q=', $httplang);
+        if (strpos($rawlang[0], '-') !== false) {
+            // We ignore the locale part, as in en-GB vs en-US
+            $rawlang[0] = substr($rawlang[0], 0, strpos($rawlang[0], '-'));
+        }
+        if (count($rawlang) == 1) {
+            $rawlang[1] = 1.0; // The absence of weighting means a weight of 1 (max)
+        }
+        $langs[$rawlang[1]][] = $rawlang[0];
+    }
+    krsort($langs, SORT_NUMERIC);
+    // Choosing the best match
+    foreach ($langs as $weight => $codes) {
+        foreach ($codes as $code) {
+            if (in_array($code, $available_langs)) {
+                return $code;
+            }
+        }
+    }
+
+    // No match
+    return null;
+}
+
+/**
+ * Get a language variable in a specific language.
+ */
+function custompages_get_lang($variable)
+{
+    return get_lang($variable, null, $_SESSION['user_language_choice']);
+}