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wp_remote_retrieve_header( array|WP_Error $response, string $header )

Retrieve a single header by name from the raw response.

Parameters

$response

(array|WP_Error) (Required) HTTP response.

$header

(string) (Required) Header name to retrieve value from.

Return

(string) The header value. Empty string on if incorrect parameter given, or if the header doesn't exist.

Source

File: wp-includes/http.php 

function wp_remote_retrieve_header( $response, $header ) {
	if ( is_wp_error( $response ) || ! isset( $response['headers'] ) ) {
		return '';
	}

	if ( isset( $response['headers'][ $header ] ) ) {
		return $response['headers'][ $header ];
	}

	return '';
}

Uses

Uses Description
wp-includes/load.php: is_wp_error()

Check whether variable is a WordPress Error.

Changelog

Version Description
2.7.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_remote_retrieve_header