私はmedia_sideload_imageを使ってウェブから画像をダウンロードして保存しています。しかし、問題はyoutubeからのものが常に "hqdefault.jpg"と呼ばれるということです、それはそれが既存の画像を上書きすることを意味します。これを修正するには3つの方法があります。
ありがとう、デニス
media_sideload_image()
を使い始めたとき、添付IDの代わりに完全なhtmlタグを返すので、それはまったく役に立たないことがわかりました。そこで、media_sideload_image()
のすべての機能を複製し、次のような非常に便利なものを追加する独自のバージョンを作成しました。
media_sideload_image()
の代わりに以下の関数を呼び出すだけです。
/**
* Download an image from the specified URL and attach it to a post.
* Modified version of core function media_sideload_image() in /wp-admin/includes/media.php (which returns an html img tag instead of attachment ID)
* Additional functionality: ability override actual filename, and to pass $post_data to override values in wp_insert_attachment (original only allowed $desc)
*
* @since 1.4 Somatic Framework
*
* @param string $url (required) The URL of the image to download
* @param int $post_id (required) The post ID the media is to be associated with
* @param bool $thumb (optional) Whether to make this attachment the Featured Image for the post (post_thumbnail)
* @param string $filename (optional) Replacement filename for the URL filename (do not include extension)
* @param array $post_data (optional) Array of key => values for wp_posts table (ex: 'post_title' => 'foobar', 'post_status' => 'draft')
* @return int|object The ID of the attachment or a WP_Error on failure
*/
function somatic_attach_external_image( $url = null, $post_id = null, $thumb = null, $filename = null, $post_data = array() ) {
if ( !$url || !$post_id ) return new WP_Error('missing', "Need a valid URL and post ID...");
require_once( ABSPATH . 'wp-admin/includes/file.php' );
// Download file to temp location, returns full server path to temp file, ex; /home/user/public_html/mysite/wp-content/26192277_640.tmp
$tmp = download_url( $url );
// If error storing temporarily, unlink
if ( is_wp_error( $tmp ) ) {
@unlink($file_array['tmp_name']); // clean up
$file_array['tmp_name'] = '';
return $tmp; // output wp_error
}
preg_match('/[^\?]+\.(jpg|JPG|jpe|JPE|jpeg|JPEG|gif|GIF|png|PNG)/', $url, $matches); // fix file filename for query strings
$url_filename = basename($matches[0]); // extract filename from url for title
$url_type = wp_check_filetype($url_filename); // determine file type (ext and mime/type)
// override filename if given, reconstruct server path
if ( !empty( $filename ) ) {
$filename = sanitize_file_name($filename);
$tmppath = pathinfo( $tmp ); // extract path parts
$new = $tmppath['dirname'] . "/". $filename . "." . $tmppath['extension']; // build new path
rename($tmp, $new); // renames temp file on server
$tmp = $new; // Push new filename (in path) to be used in file array later
}
// assemble file data (should be built like $_FILES since wp_handle_sideload() will be using)
$file_array['tmp_name'] = $tmp; // full server path to temp file
if ( !empty( $filename ) ) {
$file_array['name'] = $filename . "." . $url_type['ext']; // user given filename for title, add original URL extension
} else {
$file_array['name'] = $url_filename; // just use original URL filename
}
// set additional wp_posts columns
if ( empty( $post_data['post_title'] ) ) {
$post_data['post_title'] = basename($url_filename, "." . $url_type['ext']); // just use the original filename (no extension)
}
// make sure gets tied to parent
if ( empty( $post_data['post_parent'] ) ) {
$post_data['post_parent'] = $post_id;
}
// required libraries for media_handle_sideload
require_once(ABSPATH . 'wp-admin/includes/file.php');
require_once(ABSPATH . 'wp-admin/includes/media.php');
require_once(ABSPATH . 'wp-admin/includes/image.php');
// do the validation and storage stuff
$att_id = media_handle_sideload( $file_array, $post_id, null, $post_data ); // $post_data can override the items saved to wp_posts table, like post_mime_type, guid, post_parent, post_title, post_content, post_status
// If error storing permanently, unlink
if ( is_wp_error($att_id) ) {
@unlink($file_array['tmp_name']); // clean up
return $att_id; // output wp_error
}
// set as post thumbnail if desired
if ($thumb) {
set_post_thumbnail($post_id, $att_id);
}
return $att_id;
}