给你：

   if(!current_user_can(\'delete_others_posts\')){
    /*Handling wp media uloads*/
    add_filter(\'wp_handle_upload_prefilter\',\'lets_handle_img_width\');
    function lets_handle_img_width($file)
    {
        $img = getimagesize($file[\'tmp_name\']);
        $width = $img[0];

        if ($width < 350){
            $file[\'error\'] = "Image is small too small. Get something of width more than 350px.";
        }
        return $file;
    }
}