diff -r 706f10bcdc3c -r f5690d918358 server/src/app/Libraries/CocoonUtils.php
--- a/server/src/app/Libraries/CocoonUtils.php	Sun Oct 02 19:11:06 2016 +0200
+++ b/server/src/app/Libraries/CocoonUtils.php	Sun Oct 02 19:14:07 2016 +0200
@@ -76,4 +76,14 @@
         );
     }
 
+    public static function getGeonamesidFromUrl($url) {
+        $matches = [];
+        if(preg_match(config('corpusparole.geonames_url_regexp'), $url, $matches) === 1) {
+            return $matches[1];
+        }
+        else {
+            return null;
+        }
+    }
+
 }