如何解除WordPress对apk文件上传的限制

add_filter('upload_mimes', 'allow_custom_mimes');
function allow_custom_mimes ( $existing_mimes=array() ) {
// ' with mime type '<code>application/vnd.android.package-archive</code>'
$existing_mimes['apk'] = '<code>application/vnd.android.package-archive</code>';
return $existing_mimes;
}