Retrieve only the response message from the raw response.

Will return an empty array if incorrect parameter value is given.

Signature

wp_remote_retrieve_response_message( $response )
response
 (array) HTTP response.

Return

(string) The response message. Empty string on incorrect parameter given.

Source

function wp_remote_retrieve_response_message(&$response) {
	if ( is_wp_error($response) || ! isset($response['response']) || ! is_array($response['response']))
		return '';

	return $response['response']['message'];
}
WP Trac GitHub

Link here