当图像位于媒体库中时,可以将其设置为后期缩略图。要在媒体库中添加图像,需要将其上载到服务器。WordPress已经有了将图像放入媒体库的功能,您只需要一个上传文件的脚本。
用法:
Generate_Featured_Image( \'../wp-content/my_image.jpg\', $post_id );
// $post_id is Numeric ID... You can also get the ID with:
wp_insert_post()
功能:
function Generate_Featured_Image( $image_url, $post_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\'
);
$attach_id = wp_insert_attachment( $attachment, $file, $post_id );
require_once(ABSPATH . \'wp-admin/includes/image.php\');
$attach_data = wp_generate_attachment_metadata( $attach_id, $file );
$res1= wp_update_attachment_metadata( $attach_id, $attach_data );
$res2= set_post_thumbnail( $post_id, $attach_id );
}
http://codex.wordpress.org/Function_Reference/wp_upload_dir
http://codex.wordpress.org/Function_Reference/wp_insert_attachment
编辑:添加了路径创建
http://codex.wordpress.org/Function_Reference/wp_mkdir_p