php 未捕获的异常 'Exception' 带有消息 'SimpleXMLElement' 的序列化是不允许的'
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/6058966/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Uncaught exception 'Exception' with message 'Serialization of 'SimpleXMLElement' is not allowed'
提问by user761088
I am not sure why this is coming up. I am notserializing the XML, but my array that I created from an RSS feed (note this is just a snippet):
我不确定为什么会出现这种情况。我没有序列化 XML，而是我从 RSS 提要创建的数组（注意这只是一个片段）：
$game_data = array (
'sysreqos' => $game->systemreq->pc->sysreqos,
'sysreqmhz' => $game->systemreq->pc->sysreqmhz,
'sysreqmem' => $game->systemreq->pc->sysreqmem,
'sysreqdx' => $game->systemreq->pc->sysreqdx,
'sysreqhd' => $game->systemreq->pc->sysreqhd,
);
Then I serialize it $some_var = serialize($game_data)and write to a text file fputs($fh,$some_var).
然后我将它序列化$some_var = serialize($game_data)并写入文本文件fputs($fh,$some_var)。
But it does not get that far, it errors out on the serialize line:
但它并没有那么远，它在序列化行上出错：
Uncaught exception 'Exception' with message 'Serialization of 'SimpleXMLElement' is not allowed'
未捕获的异常 'Exception' 带有消息 'SimpleXMLElement' 的序列化是不允许的'
回答by Stefan Gehrig
You have to cast the XML data to a string because internally they are all SimpleXMLElements.
您必须将 XML 数据转换为字符串，因为在内部它们都是SimpleXMLElements。
$game_data = array (
'sysreqos' => (string)$game->systemreq->pc->sysreqos,
'sysreqmhz' => (string)$game->systemreq->pc->sysreqmhz,
'sysreqmem' => (string)$game->systemreq->pc->sysreqmem,
'sysreqdx' => (string)$game->systemreq->pc->sysreqdx,
'sysreqhd' => (string)$game->systemreq->pc->sysreqhd
);
Or perhaps a little bit more elegant:
或者也许更优雅一点：
$game_data = array();
$properties = array('sysreqos', 'sysreqmhz', 'sysreqmem', 'sysreqdx', 'sysreqhd');
foreach ($properties as $p) {
$game_data[$p] = (string)$game->systemreq->pc->$p;
}
回答by abdulwadood
In the Classes and Objects docs, there is this: In order to be able to unserialize() an object, the class of that object needs to be defined.
在类和对象文档中，有这样的：为了能够反序列化（）一个对象，需要定义该对象的类。
Prior to PHP 5.3, this was not an issue. But after PHP 5.3 an object made by SimpleXML_Load_String() cannot be serialized. An attempt to do so will result in a run-time failure, throwing an exception. If you store such an object in $_SESSION, you will get a post-execution error that says this:
在 PHP 5.3 之前，这不是问题。但是在 PHP 5.3 之后，由 SimpleXML_Load_String() 创建的对象不能被序列化。尝试这样做将导致运行时失败，引发异常。如果您将这样的对象存储在 $_SESSION 中，您将收到一个执行后错误，内容如下：
Fatal error: Uncaught exception 'Exception' with message 'Serialization of 'SimpleXMLElement' is not allowed' in [no active file]:0 Stack trace: #0 {main} thrown in [no active file] on line 0
致命错误：在 [无活动文件]:0 中出现消息“不允许序列化 'SimpleXMLElement' 的未捕获异常'异常'：0 堆栈跟踪：#0 {main} 在第 0 行的 [无活动文件] 中抛出
The entire contents of the session will be lost. Hope this saves someone some time!
会话的全部内容将丢失。希望这可以节省一些时间！
<?php // RAY_temp_ser.php
error_reporting(E_ALL);
session_start();
var_dump($_SESSION);
$_SESSION['hello'] = 'World';
var_dump($_SESSION);
// AN XML STRING FOR TEST DATA
$xml = '<?xml version="1.0"?>
<families>
<parent>
<child index="1" value="Category 1">Child One</child>
</parent>
</families>';
// MAKE AN OBJECT (GIVES SimpleXMLElement)
$obj = SimpleXML_Load_String($xml);
// STORE THE OBJECT IN THE SESSION
$_SESSION['obj'] = $obj;
By: Ray.Paseur
作者：雷·帕瑟
Ref: http://php.net/manual/en/function.unserialize.php
参考：http: //php.net/manual/en/function.unserialize.php
what i do is as 'Stefan Gehrig' said, cast the XML data to a string
我所做的是正如“Stefan Gehrig”所说，将 XML 数据转换为字符串
$_SESSION['obj'] = (string)$obj;
