如果您不想弄乱输出，输出缓冲是非常有用的。我在一行代码中做到了这一点，我可以随意注释/取消注释

 ob_start();var_dump(); user_error(ob_get_contents()); ob_get_clean();

Print_r (debug_backtrace());

或者类似的东西:-)

我使用Netbeans和XDebug。 在它的网站上查看如何配置它的文档。 http://php.netbeans.org/

For the really gritty problems that would be too time consuming to use print_r/echo to figure out I use my IDE's (PhpEd) debugging feature. Unlike other IDEs I've used, PhpEd requires pretty much no setup. the only reason I don't use it for any problems I encounter is that it's painfully slow. I'm not sure that slowness is specific to PhpEd or any php debugger. PhpEd is not free but I believe it uses one of the open-source debuggers (like XDebug previously mentioned) anyway. The benefit with PhpEd, again, is that it requires no setup which I have found really pretty tedious in the past.

由Derick Rethans编写的Xdebug非常好。我前段时间用过，发现安装起来不那么容易。一旦你完成了，你就不会明白没有它你是如何做到的:-)

在Zend开发者专区有一篇很好的文章(在Linux上安装似乎并不容易)，甚至还有一个Firefox插件，我从来没用过。

PhpEd真的很好。你可以进入/进入/退出函数。你可以运行特别代码，检查变量，改变变量。太神奇了。