How to solve the PHP Error Warning: Cannot modify header information
That message is the bane of anyone that used the header function to forward to a new Location. Any output from PHP before that command will cause it to fail with a Warning: Cannot modify header information - headers already sent by…
Things to check…
Look at the :number in the message “headers already sent by (output started at /public_html/something.php:581)” This should take you right to it.
Make sure your require and include directives do not have any output. This includes blank lines not wrapped by a < ? ?>.
Make sure your main file does not have any blank lines or output before the header function.
still running into an error???
I had an instance where it said on line 1 there was output. Line one was
deleted it and all was fine.
Posted: August 25th, 2007 under PHP, Linux, Apache.
Comments: none
Write a comment