在生产环境中，我使用error_log()将相关数据记录到服务器的错误日志中。

在生产环境中，我使用error_log()将相关数据记录到服务器的错误日志中。

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。

PhpEdit有一个内置调试器，但我通常最终使用echo();和print_r ();老式的方式!!

Komodo IDE works well with xdebug, even for the remore debugging. It needs minimum amount of configuration. All you need is a version of php that Komodo can use locally to step through the code on a breakpoint. If you have the script imported into komodo project, then you can set breakpoints with a mouse-click just how you would set it inside eclipse for debugging a java program. Remote debugging is obviously more tricky to get it to work correctly ( you might have to map the remote url with a php script in your workspace ) than a local debugging setup which is pretty easy to configure if you are on a MAC or a linux desktop.

Nusphere也是一个很好的php调试器 nusphere