在WordPress主题中加入远程图片文件自动本地化代码，经常转载文章的朋友应该会用到这个功能。把外链图片自动保存到网站本地，防止外链图片失效造成图片不显示。那么如何实现WordPress远程图片自动本地化？把下面的代码添加到主题的 functions.php 文件或者是 functions.php 的引入文件中即可，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。
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 ( !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\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$savefiletype = array(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’jpg\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’gif\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’jpg\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’bmp\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’);
if (in_array($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;
}