WP_REST_Request::get_header_as_array( string $key )

Retrieves header values from the request.

Parameters

$key

(Required) Header name, will be canonicalized to lowercase.

Return

(array|null) List of string values if set, null otherwise.

Source

File: wp-includes/rest-api/class-wp-rest-request.php 

	public function get_header_as_array( $key ) {
		$key = $this->canonicalize_header_name( $key );

		if ( ! isset( $this->headers[ $key ] ) ) {
			return null;
		}

		return $this->headers[ $key ];
	}

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Related

Changelog

Changelog
Version Description
WP-4.4.0 Introduced.