Su functions.php
add_filter('upload_mimes', 'custom_upload_xml');function custom_upload_xml($mimes) { $mimes = array_merge($mimes, array('xml' => 'application/xml')); return $mimes;}Su functions.php
add_filter('upload_mimes', 'custom_upload_xml');function custom_upload_xml($mimes) { $mimes = array_merge($mimes, array('xml' => 'application/xml')); return $mimes;}