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Summery Summery
Canonicalizes the header name.
Syntax Syntax
Description 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 Parameters
- $key
-
(Required) Header name.
Return Return
(string) Canonicalized name.
Source 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;
}
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Changelog Changelog
| Version | Description |
|---|---|
| 4.4.0 | Introduced. |