将这段代码添加到 wordpress 主题 functions.php 文件里就可以了。
//自动本地化外链图片 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 = get_bloginfo('url'); } if (get_option('uploads_use_yearmonth_folders')) { $upload_url_path.= '/wp-content/uploads/' . date("Y", time()) . '/' . date("m", time()); } require_once ("../wp-includes/class-snoopy.php"); $snoopy_Auto_Save_Image = new Snoopy; $img = array(); //以文章的标题作为图片的标题 if (!empty($_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 . "<br>"; 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, $url, $text); //替换文章里面的图片地址 } } } $content = AddSlashes($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; }
以后你发表文章时就不用去管文章中的外链图片了,因为上面的代码会自动将文章中包含的外链图片自动保存到本地
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