WP_REST_Request::canonicalize_header_name( string $key )
Canonicalizes the header name.
Description
Ensures that header names are always treated the same regardless of source. Header names are always case insensitive.
Note that we treat - (dashes) and _ (underscores) as the same character, as per header parsing rules in both Apache and nginx.
Parameters
- $key
-
(string) (Required) Header name.
Return
(string) Canonicalized name.
Source
File: wp-includes/rest-api/class-wp-rest-request.php
public static function canonicalize_header_name( $key ) {
$key = strtolower( $key );
$key = str_replace( '-', '_', $key );
return $key;
}
Changelog
| Version | Description |
|---|---|
| WP-4.4.0 | Introduced. |