Retrieves the caption for an attachment.
Parameters
$post_id
intoptional- Attachment ID. Default is the ID of the global
$post
.
Source
if ( $uploads && false === $uploads['error'] ) {
// Check that the upload base exists in the file location.
if ( str_starts_with( $file, $uploads['basedir'] ) ) {
// Replace file location with url location.
$url = str_replace( $uploads['basedir'], $uploads['baseurl'], $file );
} elseif ( str_contains( $file, 'wp-content/uploads' ) ) {
// Get the directory name relative to the basedir (back compat for pre-2.7 uploads).
$url = trailingslashit( $uploads['baseurl'] . '/' . _wp_get_attachment_relative_path( $file ) ) . wp_basename( $file );
} else {
// It's a newly-uploaded file, therefore $file is relative to the basedir.
$url = $uploads['baseurl'] . "/$file";
}
}
}
/*
* If any of the above options failed, Fallback on the GUID as used pre-2.7,
* not recommended to rely upon this.
*/
if ( ! $url ) {
$url = get_the_guid( $post->ID );
}
// On SSL front end, URLs should be HTTPS.
Changelog
Version | Description |
---|---|
4.6.0 | Introduced. |
User Contributed Notes
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