(PECL OAuth >= 0.99.1)
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$consumer_key
, string $consumer_secret
[, string $signature_method
= OAUTH_SIG_METHOD_HMACSHA1
[, int $auth_type
= 0
]] )$protected_resource_url
[, array $extra_parameters
[, string $http_method
[, array $http_headers
]]] ) : mixed$http_method
, string $url
[, mixed $extra_parameters
] ) : string$access_token_url
[, string $auth_session_handle
[, string $verifier_token
]] ) : array