php - how to jump to other page after header had been sent?

how to jump to other page after header had been sent ?

I have some codes writed in my template file, I want to using php to jump to other page when some condition is true, but I can not use header command here ,for the header info had been sent in other php file before this template file. then how can I jump to other url now ? only the way to use js?

Warning: Cannot modify header information - headers already sent by ...

Answer

Use output buffering and header clearing to achieve this.

ob_start()
...
if (!headers_sent()) {
  foreach (headers_list() as $header)
    header_remove($header);
}
ob_flush_end()

Untested, but give it a shot.