Chapter 14. Error Handling
In an ideal world software would never experience errors but we don't live in an ideal world! So we need to consider what to do when errors arise. One option is to simply leave PHP5 to do its best, but when the issues are considered, that doesn't seem like a good choice.
What are our concerns over errors? Perhaps the overriding issue here has to be that in case of an error we need the software to degrade gracefully and not damage the system. Another consideration for web software is that errors should not provide information or opportunities that will aid crackers any more than can be helped.
Errors create problems for developers. One is that in the nature of the web, errors are often not reported. People simply give up and do something else. Web software is often written quickly, and it is surprising how many errors exist in released software. Another factor for developers is that error handling can be a big overhead; also it is often unclear what counts as a good...
