Ticket #14519: 14519-2.diff

twentyten/functions.php

@@ -103 +103 @@
         // Your changeable header business starts here
         define( 'HEADER_TEXTCOLOR', '' );
-        // No CSS, just IMG call. The %s is a placeholder for the theme template directory URI.
-        define( 'HEADER_IMAGE', '%s/images/headers/path.jpg' );
 
         // The height and width of your custom header. You can hook into the theme's own filters to change these values.
@@ -176 +174 @@
                 )
         ) );
+
+        // Use a consistent random default header
+        global $_wp_default_headers;
+        $header_names = array_keys( $_wp_default_headers );
+        $header_key = crc32( site_url( '', 'https' ) ) % count( $_wp_default_headers );
+        define( 'HEADER_IMAGE', $_wp_default_headers[$header_names[$header_key]]['url'] );
 }
 endif;