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📜  sendgrid\mail\mail 类的对象无法转换为字符串 - SQL 代码示例

📅  最后修改于: 2022-03-11 15:05:11.804000             🧑  作者: Mango

代码示例1
$query = "INSERT INTO cards VALUES('$this->type','$this->tag','{$this->author->last}',"