通过WordPress中的图像URL或图像链接上传图像

Question

如何通过编程通过图像URL或WordPress媒体库中图像的链接上传图像。

Answer 1

您可以通过 URL 传递$_REQUEST['image']来执行此操作，方法是执行以下操作。

// $filename should be the path to a file in the upload directory.
$filename = $_REQUEST['image'];
// The ID of the post this attachment is for.
$parent_post_id = 37;
// Check the type of file. We'll use this as the 'post_mime_type'.
$filetype = wp_check_filetype( basename( $filename ), null );
// Get the path to the upload directory.
$wp_upload_dir = wp_upload_dir();
// Prepare an array of post data for the attachment.
$attachment = array(
    'guid'           => $wp_upload_dir['url'] . '/' . basename( $filename ), 
    'post_mime_type' => $filetype['type'],
    'post_title'     => preg_replace( '/.[^.]+$/', '', basename( $filename ) ),
    'post_content'   => '',
    'post_status'    => 'inherit'
);
// Insert the attachment.
$attach_id = wp_insert_attachment( $attachment, $filename, $parent_post_id );
// Make sure that this file is included, as wp_generate_attachment_metadata() depends on it.
require_once( ABSPATH . 'wp-admin/includes/image.php' );
// Generate the metadata for the attachment, and update the database record.
$attach_data = wp_generate_attachment_metadata( $attach_id, $filename );
wp_update_attachment_metadata( $attach_id, $attach_data );
set_post_thumbnail( $parent_post_id, $attach_id );

只需跳过您不需要的部分，例如将图像设置为post-> set_post_thumbnail((，我添加了它以更好地参考将图像附加到post。