wp_get_http_headers() WordPress Function

function wp_get_http_headers( $url, $deprecated = false ) {
	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '2.7.0' );
	}

	$response = wp_safe_remote_head( $url );

	if ( is_wp_error( $response ) ) {
		return false;
	}

	return wp_remote_retrieve_headers( $response );
}
Uses	Description
wp-includes/functions.php:_deprecated_argument()	Mark a function argument as deprecated and inform when it has been used.
wp-includes/http.php:wp_safe_remote_head()	Retrieve the raw response from a safe HTTP request using the HEAD method.
wp-includes/http.php:wp_remote_retrieve_headers()	Retrieve only the headers from the raw response.
wp-includes/load.php:is_wp_error()	Checks whether the given variable is a WordPress Error.