Expired timestamp, yours 1531390462, ours 1550334801
<hr />
OAuthRequest Object
(
    [parameters:OAuthRequest:private] => Array
        (
            [oauth_version] => 1.0
            [oauth_nonce] => 66bbd5b6df0ab8cecbadc5c36c85538d
            [oauth_timestamp] => 1531390462
            [oauth_consumer_key] => key
            [oauth_signature_method] => HMAC-SHA1
            [oauth_signature] => ibBzUaUN2+8l99VDID1XNf15nKQ=
        )

    [http_method:OAuthRequest:private] => GET
    [http_url:OAuthRequest:private] => http://term.ie/oauth/example/request_token.php?oauth_version=1.0&oauth_nonce=66bbd5b6df0ab8cecbadc5c36c85538d&oauth_timestamp=1531390462&oauth_consumer_key=key&oauth_signature_method=HMAC-SHA1&oauth_signature=ibBzUaUN2%2B8l99VDID1XNf15nKQ%3D
    [base_string] => 
)