远程图片本地化可以解决很多问题,比如抄袭,复制粘贴,虽然我们不提倡这样做。但是在某些特殊情况下可能会用到。
本文给大家推荐两种不使用插件的方法。(如果图片格式是jpeg有时候无法保存,jpg和png、gif都可以成功,另外有可能会导致后台插入图片的时候提示“上传时发生了错误。请稍后再试。”)
第一种将以下代码写入主题的functions.php文件或者是functions.php的引入文件中即可:
- //远程图片本地化
- add_filter('content_save_pre', 'auto_save_image');
- function auto_save_image($content) {
- $upload_path = '';
- $upload_url_path = get_bloginfo('url');
- //上传目录
- if (($var = get_option('upload_path')) !=''){
- $upload_path = $var;
- } else {
- $upload_path = 'wp-content/uploads';
- }
- if(get_option('uploads_use_yearmonth_folders')) {
- $upload_path .= '/'.date("Y",time()).'/'.date("m",time());
- }
- //文件地址
- if(($var = get_option('upload_url_path')) != '') {
- $upload_url_path = $var;
- } else {
- $upload_url_path = bloginfo('url');
- }
- if(get_option('uploads_use_yearmonth_folders')) {
- $upload_url_path .= '/'.date("Y",time()).'/'.date("m",time());
- }
- require_once ("../wp-includes/class-snoopy.php");
- $snoopy_Auto_Save_Image = new Snoopy;
- $img = array();
- //以文章的标题作为图片的标题
- if ( !emptyempty( $_REQUEST['post_title'] ) )
- $post_title = wp_specialchars( stripslashes( $_REQUEST['post_title'] ));
- $text = stripslashes($content);
- if (get_magic_quotes_gpc()) $text = stripslashes($text);
- preg_match_all("/ src=("|'){0,}(http://(.+?))("|'|s)/is",$text,$img);
- $img = array_unique(dhtmlspecialchars($img[2]));
- foreach ($img as $key => $value){
- set_time_limit(180); //每个图片最长允许下载时间,秒
- if(str_replace(get_bloginfo('url'),"",$value)==$value&&str_replace(get_bloginfo('home'),"",$value)==$value){
- //判断是否是本地图片,如果不是,则保存到服务器
- $fileext = substr(strrchr($value,'.'),1);
- $fileext = strtolower($fileext);
- if($fileext==""||strlen($fileext)>4)
- $fileext = "jpg";
- $savefiletype = array('jpg','gif','png','bmp');
- if (in_array($fileext, $savefiletype)){
- if($snoopy_Auto_Save_Image->fetch($value)){
- $get_file = $snoopy_Auto_Save_Image->results;
- }else{
- echo "error fetching file: ".$snoopy_Auto_Save_Image->error."
- ";
- echo "error url: ".$value;
- die();
- }
- $filetime = time();
- $filepath = "/".$upload_path;//图片保存的路径目录
- !is_dir("..".$filepath) ? mkdirs("..".$filepath) : null;
- //$filename = date("His",$filetime).random(3);
- $filename = substr($value,strrpos($value,'/'),strrpos($value,'.')-strrpos($value,'/'));
- //$e = '../'.$filepath.$filename.'.'.$fileext;
- //if(!is_file($e)) {
- // copy(htmlspecialchars_decode($value),$e);
- //}
- $fp = @fopen("..".$filepath.$filename.".".$fileext,"w");
- @fwrite($fp,$get_file);
- fclose($fp);
- $wp_filetype = wp_check_filetype( $filename.".".$fileext, false );
- $type = $wp_filetype['type'];
- $post_id = (int)$_POST['temp_ID2'];
- $title = $post_title;
- $url = $upload_url_path.$filename.".".$fileext;
- $file = $_SERVER['DOCUMENT_ROOT'].$filepath.$filename.".".$fileext;
- //添加数据库记录
- $attachment = array(
- 'post_type' => 'attachment',
- 'post_mime_type' => $type,
- 'guid' => $url,
- 'post_parent' => $post_id,
- 'post_title' => $title,
- 'post_content' => '',
- );
- $id = wp_insert_attachment($attachment, $file, $post_parent);
- $text = str_replace($value,'http://www.zswu.net/wp-content/uploads'.$url,$text); //替换里面的网址成自己的
- }
- }
- }
- $content = AddSlashes($text);
- remove_filter('content_save_pre', 'auto_save_image');
- return $content;
- }
- function mkdirs($dir)
- {
- if(!is_dir($dir))
- {
- mkdirs(dirname($dir));
- mkdir($dir);
- }
- return ;
- }
- function dhtmlspecialchars($string) {
- if(is_array($string)) {
- foreach($string as $key => $val) {
- $string[$key] = dhtmlspecialchars($val);
- }
- }else{
- $string = str_replace('&', '&', $string);
- $string = str_replace('"', '"', $string);
- $string = str_replace('<', '<', $string); $string = str_replace('>', '>', $string);
- $string = preg_replace('/&(#d;)/', '&1', $string);
- }
- return $string;
- }
- //远程图片本地化结束
第二种和上面一样,将以下代码写入主题的functions.php文件或者是functions.php的引入文件中即可:
- /************自动下载外部图片开始**************/
- //多级目录创建
- function mkdirs($dir){
- if(!is_dir($dir)){
- if(!$this->mkdirs(dirname($dir))){
- return false;
- }
- if(!mkdir($dir,0777, true)){
- return false;
- }
- }
- return true;
- } </code>
- function save_post_fix($content){
- $post_id = get_the_ID();
- $upload_dir = wp_upload_dir();
- $path = $upload_dir["url"];
- $realPath = $upload_dir["path"];
- if(!is_dir($realPath)){
- mkdirs($realPath);
- }
- $pagelink=array();
- $pattern_page = '/<img([sS]*?)src=["|'](.*?)["|']([sS]*?)>/i';
- preg_match_all($pattern_page, $content, $pagelink[]);
- foreach ($pagelink[0][2] as $key => $value) {
- $pic_url = $value;
- $url_feter = parse_url($pic_url);
- if(stripos($url_feter["host"],"zhnytech.com")){
- continue;
- }else{
- $ch = curl_init(); // 启动一个CURL会话
- curl_setopt($ch,CURLOPT_HEADER,1); //不示返回的Header区域内容
- curl_setopt($ch, CURLOPT_NOBODY, TRUE);
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
- curl_setopt($ch,CURLOPT_URL,$pic_url);
- $hd = curl_exec($ch);
- if(!emptyempty($hd) && !(strpos($hd,'Content-Length: image/png')||strpos($hd,'Content-Length: image/jpg'))){
- $fp =file_get_contents($pic_url);
- $pic_name =basename($url_feter["path"]);
- $savePath = $realPath.'/'.$pic_name;
- $fullPath = $path.'/'.$pic_name;
- if(file_exists($savePath)){
- $savePath = $realPath.'/'.str_replace('.','-'.date("s").'.' ,$pic_name);
- $fullPath = $path.'/'.str_replace('.','-'.date("s").'.' ,$pic_name);
- }
- if(file_put_contents($savePath,$fp)){
- $content = str_replace($pic_url, $fullPath, $content);
- //插数据库生成预览图
- $wp_filetype = wp_check_filetype(basename($savePath), null );
- $wp_upload_dir = wp_upload_dir();
- $attachment = array(
- 'guid' => $wp_upload_dir['url'] . '/' . basename( $savePath ),
- 'post_mime_type' => $wp_filetype['type'],
- 'post_title' => preg_replace( '/.[^.]+$/', '', basename( $savePath ) ),
- 'post_content' => '',
- 'post_status' => 'inherit'
- );
- $attach_id = wp_insert_attachment( $attachment, $savePath, $post_id );
- require_once( ABSPATH . 'wp-admin/includes/image.php' );
- $attach_data = wp_generate_attachment_metadata( $attach_id, $savePath );
- wp_update_attachment_metadata( $attach_id, $attach_data );
- }
- }
- }
- }
- return $content;
- }
- add_filter( 'content_save_pre', 'save_post_fix', 90, 1 );
- /************自动下载外部图片结束**************/
两种方法都可以,大家可以测试看看。以后每当在wordpress发布文章时如果文章中含有外链图片就会自动本地化了,无需任何设置操作非常方便。