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How to fix “Headers already sent” error in PHP

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When running my script, I am getting several errors like this:

Warning: Cannot modify header information - headers already sent by (output started at /some/file.php:12) in /some/file.php on line 23

The lines mentioned in the error messages contain header() and setcookie() calls.

What could be the reason for this? And how to fix it?

  • PHP

  • asked 3 years ago
  • B Butts

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  • asked 3 years ago
  • viewed 379 times
  • active 3 years ago

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