Ticket #20449: 20449.patch

wp-admin/includes/file.php

@@ -80 +80 @@
         $home = get_option( 'home' );
         $siteurl = get_option( 'siteurl' );
         if ( $home != '' && $home != $siteurl ) {
-                $wp_path_rel_to_home = str_replace($home, '', $siteurl); /* $siteurl - $home */
-                $pos = strrpos($_SERVER["SCRIPT_FILENAME"], $wp_path_rel_to_home);
-                $home_path = substr($_SERVER["SCRIPT_FILENAME"], 0, $pos);
+                $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */
+                $pos = strripos( str_replace( '\\', '/', $_SERVER['SCRIPT_FILENAME'] ), $wp_path_rel_to_home );
+                $home_path = substr( $_SERVER['SCRIPT_FILENAME'], 0, $pos );
                 $home_path = trailingslashit( $home_path );
         } else {
                 $home_path = ABSPATH;