Expired timestamp, yours 1550001041, ours 1556057407
OAuthRequest Object ( [parameters:protected] => Array ( [oauth_consumer_key] => key [oauth_nonce] => 0cf226ccccb7ca29c1cf4b4608c41add [oauth_signature] => secret& [oauth_signature_method] => PLAINTEXT [oauth_timestamp] => 1550001041 [oauth_version] => 1.0 ) [http_method:protected] => GET [http_url:protected] => http://oauthbin.com:/v1/request-token?oauth_consumer_key=key&oauth_nonce=0cf226ccccb7ca29c1cf4b4608c41add&oauth_signature=secret%26&oauth_signature_method=PLAINTEXT&oauth_timestamp=1550001041&oauth_version=1.0 [base_string] => )