check_signature 510 chrome/common/extensions/docs/examples/apps/hello-php/lib/oauth/OAuth.php $this->check_signature($request, $consumer, $token); check_signature 531 chrome/common/extensions/docs/examples/apps/hello-php/lib/oauth/OAuth.php $this->check_signature($request, $consumer, $token); check_signature 547 chrome/common/extensions/docs/examples/apps/hello-php/lib/oauth/OAuth.php $this->check_signature($request, $consumer, $token); check_signature 649 chrome/common/extensions/docs/examples/apps/hello-php/lib/oauth/OAuth.php $valid_sig = $signature_method->check_signature(