From: michael at heuser dot dk
Operating system: linux
PHP version: 4.3.1
PHP Bug Type: Output Control
Bug description: ob_start calls call back function before flush
When turning on output buffering and setting a call back function like:
ob_start('callback_function');
The function is called right away. Not just in the end of the script.
Try this sample:
ob_start('ob_gzhandler');
ob_end_clean();
echo "Step 1<br>\n";
flush();
sleep(1);
echo "Step 2<br>\n";
flush();
Function ob_end_clean should cancel the buffering and it dose, but
ob_gzhandler is already called. It is called when ob_start is turned one.
Now the script fails because the function ob_gzhandler has already set
Content-Encoding header (meaning the browser expects compressed content).
A simple one:
function callback_function($content) {
die("Stop!");
return $content;
}
ob_start('callback_function');
ob_end_clean();
echo "Step 1<br>\n";
flush();
sleep(1);
echo "Step 2<br>\n";
flush();
The script is stops before ob_end_clean is called.
I think that the problem is general. I have tested the problem on more
than one computer.
The newest installation was a preinstalled Red Hat with a PHP version
4.3.1
--
Edit bug report at http://bugs.php.net/?id=22945&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=22945&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=22945&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=22945&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=22945&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=22945&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=22945&r=support
Expected behavior: http://bugs.php.net/fix.php?id=22945&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=22945&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=22945&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=22945&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=22945&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=22945&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=22945&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=22945&r=gnused
