tag_is_valid: check numeric tags properly

diff --git a/include/functions2.php b/include/functions2.php
index 1a0cb6d22a9c6d66ef917ae5f29e3572d34db308..63b11717e0774ab6600c3fb28cb8956cfc0ec3f8 100755 (executable)
--- a/include/functions2.php
+++ b/include/functions2.php
@@ -1156,7 +1156,7 @@
 
        function tag_is_valid($tag) {
                if ($tag == '') return false;
-               if (preg_match("/^[0-9]*$/", $tag)) return false;
+               if (is_numeric($tag)) return false;
                if (mb_strlen($tag) > 250) return false;
 
                if (!$tag) return false;