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Cannot modify header information - headers already sent (Yes, another one of these)

Thread began 9/29/2016 10:47 pm by John | Last modified 10/03/2016 3:03 pm by Ray Borduin | 354 views | 2 replies |


Cannot modify header information - headers already sent (Yes, another one of these)

I followed the Web development tutorial: Create a product catalog eCommerce series. Sadly, the following error whenever adding/updating to the dB has plagued me:

( ! ) Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\test\Connections\clubquarters.php:6) in C:\wamp\www\test\admin\admin_insert.php on line 65

There are many posts on this subject, and I believe I read and followed all of them. I removed all the spaces/line breaks in the php, as well as all the notes. I removed and reinstalled DataBridge and eCart, and made sure DW is updated. Additionally, I re-ran through the tutorial numerous times and had the same result each time when adding/updating to the dB. Included is the insert.php and connections php pages noted in the Warning, though it occurs on update and when I try to add to cart.

Is it a problem with the placement of the $WA_redirectURL? Does it need to be higher in the code? Is it a problem with using WAMP? (I will sorely be disappointed in myself if you see a space/extra line that I missed causing the error. Like everyone else with this error, which I am certain you are sick of seeing, I spent many hours trying to fix it myself.)

Any assistance is greatly appreciated.

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Ray BorduinWebAssist

The message implies that there is something being written to the page on clubquarters.php:line 6.

Is it possible that the connection information is wrong and triggering an error?

Try adding a die(); statement after the connection on line7.


Then see if there is something getting written to the page before the word "here" that will be displayed.

I've seen odd issues with corrupted files causing issues like this in the past as well. Perhaps creating a new blank page and copying the data fro the connection file and then overwriting the connection file will fix it. I don't really see the problem with the file either.

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Ray, Thanks for the quick response. I tried adding the die("here"); statement and that resulted in nothing being written before the 'here'. It wasn't the BOM either (forgot to mention I checked that also.) What I ended up doing is removing WAMP and installing a new version. Everything works well now. Not certain what I had configured wrong, but it works now.

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