Function Reference/wp remote retrieve header

Description

Retrieve a single header by name from the raw response.

<?php wp_remote_retrieve_header( $response, $header ); ?>

$response

(array) (required) no description

Default: None

$header

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

Default: None

(string): The header value. Empty string on if incorrect parameter given, or if the header doesnt exist.

$response = wp_remote_get('http://www.foo.com/file.txt');
$last_modified = wp_remote_retrieve_header( $response, 'last-modified' );

$last_modified will contain the value of the HTTP header last-modified

Since: 2.7.0

wp_remote_retrieve_header() is located in wp-includes/http.php