会话中的对象:致命错误:在第 0 行的 Unknown 中没有堆栈帧引发异常 [英] object in session: Fatal error: Exception thrown without a stack frame in Unknown on line 0

问题描述

session_start();
$_SESSION['dbo'] = NEW PDO('sqlite:database.db3');

给出:

致命错误:在第 0 行的 Unknown 中没有堆栈帧抛出异常

但是把它放到普通变量中不会出错.我试图做的就是将对象放入会话中，以便它被初始化一次.

but putting it to ordinary variable gives no error. All I try to do is to put object into session so it is initialized once.

推荐答案

某些对象无法序列化并存储在 $_SESSION 中.

Some objects cannot be serialized and stored in $_SESSION.

如果您的意图是在会话中存储数据库连接以供重用，请不要遵循该承诺:它不起作用.

If your intent was to store a database connection in session for reuse, don't follow that undertaking: it doesn't work.

来自关于序列化的 PHP 参考:

[...] serialize() 处理所有类型，资源类型除外.您甚至可以序列化()包含对自身的引用的数组.您正在序列化的数组/对象内的循环引用也将被存储.任何其他参考都将丢失.

[...] serialize() handles all types, except the resource-type. You can even serialize() arrays that contain references to itself. Circular references inside the array/object you are serializing will also be stored. Any other reference will be lost.

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