我使用Netbeans的XDebug和Easy XDebug FireFox插件

The add-on is essential when you debug MVC projects, because the normal way XDebug runs in Netbeans is to register the dbug session via the url. With the add-on installed in FireFox, you would set your Netbeans project properties -> Run Configuratuion -> Advanced and select "Do Not Open Web Browser" You can now set your break points and start the debugging session with Ctrl-F5 as usual. Open FireFox and right-click the Add-on icon in the right bottom corner to start monitoring for breakpoints. When the code reaches the breakpoint it will stop and you can inspect your variable states and call-stack.

1)使用print_r()。在TextMate中，我有一个'pre'的片段，它扩展为:

echo "<pre>";
print_r();
echo "</pre>";

2)我使用Xdebug，但还不能让GUI在我的Mac上正常工作。它至少打印出一个可读的堆栈跟踪版本。

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。

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.

通过简单地var_dump一些关键变量，可以很容易地找到大多数错误，但这显然取决于您开发的应用程序类型。

对于更复杂的算法，步进/断点/观察函数是非常有用的(如果没有必要)

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();