I am unable to write after mail() function.

[amit]

Hi
I am sending a attachment in the end of the code I want to redirect on another page it is showing error.
Neither I can redirect nor I can print something.
Please give me a solution .

[paulnaj]

You can only re-direct if you have not already sent any headers out already on the page containing the re-direct.

That means ...

No <!DOCTYPE stuff
No HTML
No echo's or prints