php 如何以编程方式将图片上传到wordpress并将其设置为特色图片？

jchrr9hc 于 2023-05-27 发布在 PHP

关注(0)|答案(1)|浏览(140)

在这里，在这个functions.php文件中，我试图做的是从我的文章内容中提取图像，实际上我使用的是内容中的image_url（提取第一个图像的这一部分工作正常，我已经测试过了）。问题是我不能使用URL上传图片并将其设置为featured_image，从而弹出“发布失败”。有没有人能帮帮我，或者你有别的办法？

function generate_post_featured_image($post_ID) {
$post = get_post($post_ID);

if (empty($post->featured_image)) {
    // Find the first image URL in the post content
    preg_match('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
    if (isset($matches[1])) {
        $image_url = $matches[1];

        // Sideload the image and get the attachment ID
        $attachment_id = media_sideload_image($image_url, $post_ID, null, 'id');

        if (!is_wp_error($attachment_id) && !empty($attachment_id)) {
            // Set the attachment ID as the featured image
            set_post_thumbnail($post_ID, $attachment_id);
        } else {
            $error_message = $attachment_id->get_error_message();
            echo 'Error sideloading image: ' . $error_message;
        }
    }
}
}

add_action('publish_post', 'generate_post_featured_image');

php

来源：https://stackoverflow.com/questions/76310804/how-to-programmatically-upload-image-to-the-wordpress-and-set-it-as-featured-ima

1条答案

按热度按时间

iklwldmw1#

function upload_image_and_set_featured($post_ID) {
    $post = get_post($post_ID);

    if (empty($post->featured_image)) {
        // Find the first image URL in the post content
        preg_match('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
        if (isset($matches[1])) {
            $image_url = $matches[1];

            // Upload the image and get the attachment ID
            $upload_dir = wp_upload_dir();
            $image_data = file_get_contents($image_url);
            $filename = basename($image_url);
            if (wp_mkdir_p($upload_dir['path'])) {
                $file = $upload_dir['path'] . '/' . $filename;
            } else {
                $file = $upload_dir['basedir'] . '/' . $filename;
            }
            file_put_contents($file, $image_data);
            $wp_filetype = wp_check_filetype($filename, null);
            $attachment = array(
                'post_mime_type' => $wp_filetype['type'],
                'post_title' => sanitize_file_name($filename),
                'post_content' => '',
                'post_status' => 'inherit'
            );
            $attachment_id = wp_insert_attachment($attachment, $file, $post_ID);
            if (!is_wp_error($attachment_id)) {
                require_once(ABSPATH . 'wp-admin/includes/image.php');
                $attachment_data = wp_generate_attachment_metadata($attachment_id, $file);
                wp_update_attachment_metadata($attachment_id, $attachment_data);
                set_post_thumbnail($post_ID, $attachment_id);
            } else {
                $error_message = $attachment_id->get_error_message();
                echo 'Error uploading image: ' . $error_message;
            }
        }
    }
}

add_action('publish_post', 'upload_image_and_set_featured');

将上述代码添加到您的function.php中。这段代码从你的内容中获取第一张图片，并将其设置在特色图片中。

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php 如何以编程方式将图片上传到wordpress并将其设置为特色图片？

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