我在博客上有一堆旧帖子，我想将特色图片分配给。
我已经检索了我想用于每个帖子的所有图片。
我在每个帖子的slug之后保存了每个图像文件名。
我想检索所有帖子，从每个帖子中获取slug名称，搜索上传图像文件的指定目录，当post slug与图像文件名称匹配时，将该图像设置为该特定图像的特定图像发布，并遍历所有帖子。
我不知道该怎么做，但我提供了一些我找到的示例代码，以及一些有用的（希望如此）链接。
以下代码用于检索所有帖子并更新特定帖子：
$allPosts = get_posts(array('numberposts' => -1, 'post_type' => 'post'));
foreach($allPosts as $thePost){
$my_post = array();
$my_post['post_type'] = $thePost->post_type;
$my_post['ID'] = $thePost->ID;
$my_post['post_name'] = autoSlug($thePost->post_title);
wp_update_post($my_post);
}
注意：我有一个特殊的功能，可以根据post_title生成post slugs。 （我不使用WP默认slug。）
有用的链接：
答案 0 :(得分：2)
自己写了一个脚本，还有一篇博客文章。对改进的贡献表示赞赏。请参阅此链接以获取答案Set WordPress Featured Image For All Post Slugs Matching Image File Name in Specified Directory：
<?php
// Get All Posts.
$allPosts = get_posts(array('numberposts' => -1, 'post_type' => 'post'));
// Specify where the images are located.
$themePATH = get_theme_root().'/'.get_template().'/thumbs/';
// The uploads directory for your blog.
$uploads= wp_upload_dir();
// List of images including extensions.
$images = listImages($themePATH,true);
// List of images without extensions.
$imageNames = listImages($themePATH,false);
function reverseSlug($string){
$string = str_replace("-", " ", $string);// Convert hyphen to space
$string = ucwords($string);// Capitalize the beginning of each word
return $string;
}
// Retrieve all images from the specified directory.
// Output array with and without file extensions.
function listImages($dirname=".",$display) {
$ext = array("jpg", "png", "jpeg", "gif");
$files = array();
if($handle = opendir($dirname)){
while(false !== ($file = readdir($handle))){
for($i=0;$i<sizeof($ext);$i++){
if(strstr($file, ".".$ext[$i])){
$files[] = $file;
}
}
}
closedir($handle);
}
sort($files);
foreach($files as $theFile){
$info = pathinfo($theFile);
$fileName = basename($theFile,'.'.$info['extension']);
$files1[] = $fileName;
}
if($display == false){
return ($files1);
}
if($display == true){
return($files);
}
}
for($i = 0; $i < count($allPosts); $i++){
// Check if post slugs match image slugs.
$check[$i] = in_array($allPosts[$i]->post_name, $imageNames);
if($check[$i] == 1){
echo 'Yes, post title matches image name.<br />'.PHP_EOL;
// Search through the image slugs for a direct match with the post slug.
$search[$i] = array_search($allPosts[$i]->post_name, $imageNames);
$filename = $images[$search[$i]];
$newfile = $uploads['path'].'/'.$filename;
// Copy the image from theme folder to uploads directory.
copy($themePATH.$filename, $newfile);
// Delete image from theme folder.
unlink($themePATH.$filename);
// Retrieve the file type from the file name.
$wp_filetype = wp_check_filetype(basename($filename), null);
// Construct the attachment array.
$attachment = array(
'post_mime_type' => $wp_filetype['type'],
'guid' => $uploads['url'].'/'.$filename,
'post_title' => preg_replace('/\.[^.]+$/', '', reverseSlug(basename($filename))),
'post_content' => '',
'post_status' => 'inherit'
);
// This function inserts an attachment into the media library.
$attach_id = wp_insert_attachment($attachment, $newfile, $allPosts[$i]->ID);
// You must first include the image.php file
// For the function wp_generate_attachment_metadata() to work.
require_once(ABSPATH . 'wp-admin/includes/image.php');
// This function generates metadata for an image attachment.
// It also creates a thumbnail and other intermediate sizes
// of the image attachment based on the sizes defined on
// the Settings_Media_Screen.
$attach_data = wp_generate_attachment_metadata($attach_id, $newfile);
if(!is_wp_error($attach_id)){
// Update metadata for an attachment.
wp_update_attachment_metadata($attach_id, $attach_data);
// Updates the value of an existing meta key (custom field) for the specified post.
update_post_meta($allPosts[$i]->ID, '_thumbnail_id', $attach_id);
}
}
else{
echo 'No matches found.<br />'.PHP_EOL;
}
}
?>
答案 1 :(得分：0)
你拯救了我的生命，你的代码只需要一些调整，就像一个魅力。在这里。
<?php
// Get All Posts.
$allPosts = get_posts(array('numberposts' => -1, 'post_type' => 'wpdmpro'));
// Specify where the images are located.
$themePATH = get_theme_root().'/'.get_stylesheet().'/thumbs/';
// The uploads directory for your blog.
$uploads= wp_upload_dir();
// List of images including extensions.
$images = listImages($themePATH,true);
// List of images without extensions.
$imageNames = listImages($themePATH,false);
function reverseSlug($string){
$string = str_replace("-", " ", $string);// Convert hyphen to space
$string = ucwords($string);// Capitalize the beginning of each word
return $string;
}
// Retrieve all images from the specified directory.
// Output array with and without file extensions.
function listImages($dirname=".",$display) {
$ext = array("jpg", "png", "jpeg", "gif");
$files = array();
if($handle = opendir($dirname)){
while(false !== ($file = readdir($handle))){
for($i=0;$i<sizeof($ext);$i++){
if(strstr($file, ".".$ext[$i])){
$files[] = $file;
}
}
}
closedir($handle);
}
sort($files);
foreach($files as $theFile){
$info = pathinfo($theFile);
$fileName = basename($theFile,'.'.$info['extension']);
$files1[] = $fileName;
}
if($display == false){
return ($files1);
}
if($display == true){
return($files);
}
}
for($i = 0; $i < count($allPosts); $i++){
// Check if post slugs match image slugs.
if (is_array($imageNames)) {
$check[$i] = in_array($allPosts[$i]->post_name, $imageNames);
} else {
echo 'error';
};
if($check[$i] == 1){
echo 'Yes, post title matches image name.<br />'.PHP_EOL;
// Search through the image slugs for a direct match with the post slug.
$search[$i] = array_search($allPosts[$i]->post_name, $imageNames);
$filename = $images[$search[$i]];
$newfile = $uploads['path'].'/'.$filename;
// Copy the image from theme folder to uploads directory.
copy($themePATH.$filename, $newfile);
// Delete image from theme folder.
unlink($themePATH.$filename);
// Retrieve the file type from the file name.
$wp_filetype = wp_check_filetype(basename($filename), null);
// Construct the attachment array.
$attachment = array(
'post_mime_type' => $wp_filetype['type'],
'guid' => $uploads['url'].'/'.$filename,
'post_title' => preg_replace('/\.[^.]+$/', '', reverseSlug(basename($filename))),
'post_content' => '',
'post_status' => 'inherit'
);
// This function inserts an attachment into the media library.
$attach_id = wp_insert_attachment($attachment, $newfile, $allPosts[$i]->ID);
// You must first include the image.php file
// For the function wp_generate_attachment_metadata() to work.
require_once(ABSPATH . 'wp-admin/includes/image.php');
// This function generates metadata for an image attachment.
// It also creates a thumbnail and other intermediate sizes
// of the image attachment based on the sizes defined on
// the Settings_Media_Screen.
$attach_data = wp_generate_attachment_metadata($attach_id, $newfile);
if(!is_wp_error($attach_id)){
// Update metadata for an attachment.
wp_update_attachment_metadata($attach_id, $attach_data);
// Updates the value of an existing meta key (custom field) for the specified post.
update_post_meta($allPosts[$i]->ID, '_thumbnail_id', $attach_id);
}
}
else{
echo 'No matches found.<br />'.PHP_EOL;
}
}
?>