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无插件wordpress远程图片本地化

wordpress远程图片自动本地化不用插件实现的代码
使用方法:将代码写入主题的functions.php文件即可。
    代码如下:
/****自动下载站外图片******/ //多级目录创建 function mkdirs($dir){     if(!is_dir($dir)){      if(!$this->mkdirs(dirname($dir))){       return false;      }      if(!mkdir($dir,0777, true)){     return false;      }     }     return true;  } function save_post_fix($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(); $pattern_page = '//i'; preg_match_all($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(!empty($hd) && !(strpos($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 ); /*****自动下载站外图片结束****/

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