original_string: public function getPublicKey()
      {
          $cached = $this->getCache('publicKey');
          if (!empty($cached)) {
              return $cached;
          }
  
          $wellKnown = $this->getWellKnown();
          if (empty($wellKnown->jwks_uri)) {
              return null;
          }
  
          try {
              $response = $this->client->get($wellKnown->jwks_uri);
          } catch (RequestException $e) {
              $this->lastException = $e;
              return null;
          }
  
          $jwks = json_decode($response->getBody());
          if (empty($jwks->keys[0]->x5c[0])) {
              return null;
          }
  
          $X509 = new X509();
          if (!$X509->loadX509($jwks->keys[0]->x5c[0])) {
              return null;
          }
  
          $key = (string)$X509->getPublicKey();
  
          $this->setCache('publicKey', $key);
  
          return $key;
      }
code: public function getPublicKey()
      {
          $cached = $this->getCache('publicKey');
          if (!empty($cached)) {
              return $cached;
          }
  
          $wellKnown = $this->getWellKnown();
          if (empty($wellKnown->jwks_uri)) {
              return null;
          }
  
          try {
              $response = $this->client->get($wellKnown->jwks_uri);
          } catch (RequestException $e) {
              $this->lastException = $e;
              return null;
          }
  
          $jwks = json_decode($response->getBody());
          if (empty($jwks->keys[0]->x5c[0])) {
              return null;
          }
  
          $X509 = new X509();
          if (!$X509->loadX509($jwks->keys[0]->x5c[0])) {
              return null;
          }
  
          $key = (string)$X509->getPublicKey();
  
          $this->setCache('publicKey', $key);
  
          return $key;
      }
code_tokens: public function getPublicKey ( ) { $ cached = $ this -> getCache ( 'publicKey' ) ; if ( ! empty ( $ cached ) ) { return $ cached ; } $ wellKnown = $ this -> getWellKnown ( ) ; if ( empty ( $ wellKnown -> jwks_uri ) ) { return null ; } try { $ response = $ this -> client -> get ( $ wellKnown -> jwks_uri ) ; } catch ( RequestException $ e ) { $ this -> lastException = $ e ; return null ; } $ jwks = json_decode ( $ response -> getBody ( ) ) ; if ( empty ( $ jwks -> keys [ 0 ] -> x5c [ 0 ] ) ) { return null ; } $ X509 = new X509 ( ) ; if ( ! $ X509 -> loadX509 ( $ jwks -> keys [ 0 ] -> x5c [ 0 ] ) ) { return null ; } $ key = ( string ) $ X509 -> getPublicKey ( ) ; $ this -> setCache ( 'publicKey' , $ key ) ; return $ key ; }
docstring: Get the public key of the current well-known URL
  
  @return string
docstring_tokens: Get the public key of the current well - known URL