Scalr\Acl\Acl::getPermissionIdByMnemonic PHP Method

    public static function getPermissionIdByMnemonic($resourceMnemonic, $permissionMnemonic, $scope = null)
    {
        $sName = 'Scalr\\Acl\\Acl::PERM_' . strtoupper($resourceMnemonic) . (!is_null($scope) ? '_' . strtoupper($scope) : '') . '_' . strtoupper($permissionMnemonic);
        if (defined($sName)) {
            $permissionId = constant($sName);
        } else {
            throw new \InvalidArgumentException(sprintf('Cannot find ACL permission %s', $sName));
        }
        return $permissionId;
    }

 /**
  * Checks if access to ACL resource or unique permission is allowed
  *
  * Usage:
  * --
  * use \Scalr\Acl\Acl;
  *
  * The ID of the ACL resource; The ID of the unique permission which is related to specified resource
  * $this->request->isAllowed(Acl::RESOURCE_FARMS, Acl::PERM_FARMS_EDIT);
  *
  * Array of IDs of the ACL resource (check if user have any permission); The ID of the unique permission which is related to specified resource
  * $this->request->isAllowed([Acl::RESOURCE_FARMS, Acl::RESOURCE_OWN_FARMS], Acl::PERM_FARMS_EDIT);
  *
  * Mnemonic constants: resource, permission
  * Method interprets $resourceMnemonic as RESOURCE_$resourceMnemonic_$scope, $permissionMnemonic as PERM_$resourceMnemonic_$scope_$permissionMnemonic
  * For example, call(ROLES, MANAGE) on account scope will check RESOURCE_ROLES_ACCOUNT, PERM_ROLES_ACCOUNT_MANAGE
  * $this->request->isAllowed('ROLES', 'MANAGE');
  *
  * @param   int|string|array    $resourceId             The ID or Name of the ACL resource or array of resources
  * @param   string              $permissionId optional  The ID or Name of the unique permission which is
  *                                                      related to specified resource.
  * @return  bool       Returns TRUE if access is allowed
  */
 public function isAllowed($resourceId, $permissionId = null)
 {
     if ($this->user->isScalrAdmin()) {
         // we don't have permissions on scalr scope
         return true;
     }
     if (is_string($resourceId)) {
         $resourceMnemonic = $resourceId;
         $resourceId = Acl::getResourceIdByMnemonic($resourceMnemonic, $this->getScope());
         $permissionId = $permissionId ? Acl::getPermissionIdByMnemonic($resourceMnemonic, $permissionId, $this->getScope()) : null;
     }
     if (is_array($resourceId)) {
         foreach ($resourceId as $id) {
             if (\Scalr::getContainer()->acl->isUserAllowedByEnvironment($this->getUser(), $this->getEnvironment(), $id, $permissionId)) {
                 return true;
             }
         }
         return false;
     } else {
         return \Scalr::getContainer()->acl->isUserAllowedByEnvironment($this->getUser(), $this->getEnvironment(), $resourceId, $permissionId);
     }
 }