//将远程图片地址 本地化 这个在前台编辑器中使用时会有问题

function post_save_images($content) {

    set_time_limit(240);

    global $post;

    $post_id = $post->ID;

    $preg = preg_match_all('/<img.*?src="(.*?)"/', stripslashes($content) , $matches);

    if ($preg) {

        $i = 1;

        foreach ($matches[1] as $image_url) {

            if (empty($image_url)) continue;

            $pos = strpos($image_url, get_bloginfo('url'));

            if ($pos === false) {

                $file = file_get_contents($image_url);

                $filename = basename($image_url);

                //preg_match( '/(.*?)(\.\w+)$/', $filename, $match );

                $im_name = $filename;

                $res = wp_upload_bits($im_name, '', $file);

                $dirs = wp_upload_dir();

                $filetype = wp_check_filetype($file);

                $attachment = array(

                    'guid' => $dirs['baseurl'] . '/' . _wp_relative_upload_path($file) ,

                    'post_mime_type' => $filetype['type'],

                    'post_title' => preg_replace('/\.[^.]+$/', '', basename($file)) ,

                    //preg_replace 搜索并替换

                    'post_content' => '',

                    'post_status' => 'inherit'

                );

                $attach_id = wp_insert_attachment($attachment, $file, $id);

                $attach_data = wp_generate_attachment_metadata($attach_id, $file);

                //wp_generate_attachment_metadata

                wp_update_attachment_metadata($attach_id, $attach_data);

                //if($i==1 ){

                //set_post_thumbnail( $post_id, $attach_id );

                //}

                $replace = $res['url'];

                $content = str_replace($image_url, $replace, $content);

            }

            $i++;

        }

    }

    remove_filter('content_save_pre', 'post_save_images');

    return $content;

}

$current_user = wp_get_current_user();

if ($current_user->user_login == '网站管理员用户名') { //只允许管理员使用本地化，因为前端编辑器使用会报错,使用前先填入自己的管理员用户名

    add_filter('content_save_pre', 'post_save_images');

}