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Bug #8382 re-sending http header due to session_start()
Submitted: 2000-12-22 16:38 UTC Modified: 2000-12-22 18:00 UTC
From: jmessner at neo dot rr dot com Assigned:
Status: Closed Package: Session related
PHP Version: 4.0.2 OS: Mandrake 7.1
Private report: No CVE-ID: None
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From: jmessner at neo dot rr dot com
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 [2000-12-22 16:38 UTC] jmessner at neo dot rr dot com 
This related to bug #7877, which was said not to be a bug, and that you must session_start() before any html gets sent so that the cookie gets sent before the html header.  Otherwise, calling session_start() gives the error messages stated in #7877.

At least in 4.0.2, I have found that you cannot even have so much as one blank line in your php file before your <?php tag, or else the initial header gets sent and start_session() fails.  You MUST have <?php as the absolute very first bytes of your file.

This should either be fixed, or at least well documented.  The docs don't say anything about the importance of start_session() being called immediately, nor do they say anywhere that if you have any blank lines before your <?php tag that it will then be too late to start a session.

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 [2000-12-22 18:00 UTC] sas@php.net 
If you want to send any content before using functions which manipulate the HTTP header, I suggest enabling output buffering. This is not a bug and hence this report gets closed.
 
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