一、报错: 「Can’t swap PDO instance while within transaction」 通过查询 Laravel 源代码,可以确认异常是在 setPdo 方法中抛出的: <?php public function setPdo($pdo) { if ($this->transactions >= 1) { throw new RuntimeException(" Can't swap PDO instance while within transaction. "); } $this->pdo = $pdo; r
