diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 42f4741ff0..c4d6a599a7 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -947,10 +947,18 @@ function get_sample_permalink_html($id, $new_title=null, $new_slug=null) {
return '';
}
$title = __('Click to edit this part of the permalink');
- if (strlen($post_name) > 30) {
- $post_name_abridged = substr($post_name, 0, 14). '…' . substr($post_name, -14);
+ if (function_exists('mb_strlen')) {
+ if (mb_strlen($post_name) > 30) {
+ $post_name_abridged = mb_substr($post_name, 0, 14). '…' . mb_substr($post_name, -14);
+ } else {
+ $post_name_abridged = $post_name;
+ }
} else {
- $post_name_abridged = $post_name;
+ if (strlen($post_name) > 30) {
+ $post_name_abridged = substr($post_name, 0, 14). '…' . substr($post_name, -14);
+ } else {
+ $post_name_abridged = $post_name;
+ }
}
$post_name_html = ''.$post_name_abridged.''.$post_name.'';
$display_link = str_replace(array('%pagename%','%postname%'), $post_name_html, $permalink);