如何在自定义错误消息中包含php源代码的行号？

Question

I want to do my proper error generator when i'm programming (HTML + PHP). How can i take the line, when i have an error, and put in a variable?

Example :

echo " Error # 03: variable undefined line #".$line." ";

Thanks.

Answer 1

the variables you'd be looking for are:

__LINE__
__FILE__
__FUNCTION__
__CLASS__