Php WordPress精选图像|所有与图像文件名匹配的帖子段塞

我在一个博客上有一堆旧帖子，我想给它们分配一张特色图片

我已经检索了我想在每篇文章中使用的所有图像

我在每篇文章的开头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与图像文件名匹配时，将该图像设置为该特定帖子的特色图像，并遍历所有帖子

我不知道如何去做这件事，但我提供了一些我发现的示例代码，以及一些有用的（希望）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：我有一个特殊的函数，用于根据post\u标题生成post slug。（我不使用WP默认slug。）

有用的链接：

$allPosts = get_posts(array('numberposts' => -1, 'post_type' => 'post'));
foreach($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);
}

---

我自己写了一个脚本，还有一篇博客文章。对改进的贡献表示感谢。请参阅此链接以获取答案：

---

你救了我的命，你的代码只需要一些调整，就像一个魔咒。给你

<?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;
    }
}
?>