Session/Storage/Handler/PdoSessionHandler.php
public function destroy($sessionId)
    {
        // delete the record associated with this id
        $sql = "DELETE FROM $this->table WHERE $this->idCol = :id";

        try {
            $stmt = $this->pdo->prepare($sql);
            $stmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
            $stmt->execute();
        } catch (\PDOException $e) {
            $this->rollback();

            throw $e;
        }

        return true;
    }
public function destroy($sessionId)
    {
        // delete the record associated with this id
        $sql = "DELETE FROM $this->table WHERE $this->idCol = :id";

        try {
            $stmt = $this->pdo->prepare($sql);
            $stmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
            $stmt->execute();
        } catch (\PDOException $e) {
            $this->rollback();

            throw $e;
        }

        return true;
    }
{@inheritdoc}