在php4中实现try catch的最佳方法
php4 中最接近 try-catch 块的是什么？
我在 xmlrpc 请求期间处于回调中间，无论如何都需要返回一个特定结构的数组。
我必须错误检查对外部资源的所有访问，导致嵌套 if-else 块的深层堆栈，丑陋。
What is the closest you can get to a try-catch block in php4?
I'm in the middle of a callback during an xmlrpc request and it's required to return a specifically structured array no matter what.
I have to error check all accesses to external resources, resulting in a deep stack of nested if-else blocks, ugly.
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迟到的答复，我意识到，抱歉。 我希望这仍然与您相关：
首先，我回应您在回复您的帖子时收到的评论。 PHP5 是必经之路。
然而：
如果您可以保证程序在没有返回结构化数组的情况下不可能继续，并且您绝对必须使用 PHP4，那么 exit() 或 die()包含详细的错误信息将为您带来与致命异常相同的效果。
当然，这与优雅相去甚远。 不幸的是，如果你想要一些可捕捉的东西，那么返回值和 if 检查结果是你最好的选择。 有一些标准方法可以传回特定的错误对象，但它仍然是同一件事 - 返回错误对象，如果检查结果是否是错误对象，则进行反应。
不过，请查看 PEAR 的错误对象。
Late answer, I realise, sorry. I hope this is still relevant for you:
First, I'm echoing the comments your got in response to your post. PHP5 is the way to go.
However:
If you can vouch for that the program cannot possibly continue without getting a structured array back, and you absolutely have to work with PHP4, then an exit() or die() with detailed error information will get you much the same effect as a fatal exception would.
That's far removed from being graceful, of course. If you want something catchable, then return values and if-checking the result are your best bet, unfortunately. There are some standard ways of passing back specific error objects, but it's still the same thing - return the error object, if-check whether the result was an error object, react.
Still, take a look at PEAR's error object.