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enable output_buffering in php.ini to permit redirect
I am using a local MAMP installation with my own IDE instead of TeamTreehouse's workspaces. I discovered that the default MAMP installation comes with output_buffering disabled, this will result in a redirect error which causes header("location:thanks.php") to fail. To fix this problem, open php.ini a terminal text editor, then set output_buffering to *on. Save the php.ini file, and restart the MAMP servers. Problem solved!
Andrew Shook31,709 Points
Actually, you probably should not do this since all most ever server I've worked on have this turned off. I think it is also the default config for most php. My guess is that you that you left the echo statements in the file before you called the header function:
<?php echo "<pre>"; $email_body = ""; $email_body .= "Name " . $name . "\n"; $email_body .= "Email " . $email . "\n"; $email_body .= "Details " . $details . "\n"; echo $email_body; echo "</pre>";
The problem is that you can not send headers to the browser after you start outputting data. You should move the echo statement to below the header() function instead for changing the ini file.
Robert Cooper22,701 Points
Thank you to both Jillian and Andrew. I decided to simply move my echo statements below my header function call and it worked. I'm sure changing the php.ini would also work, but if the default configuration for most php.ini files has output_buffering disabled, then I won't play around with it. Thanks for sharing your findings though since I was having issues with this while using MAMP.