#20551 [Fbk]: Output compression causes segfaults (ob_gzhandler)

From: Date: Fri, 29 Nov 2002 16:34:33 +0000
Subject: #20551 [Fbk]: Output compression causes segfaults (ob_gzhandler)
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-26195@lists.php.net to get a copy of this message 
 ID:               20551
 Updated by:       sr@php.net
 Reported By:      sroussey@network54.com
 Status:           Feedback
 Bug Type:         Output Control
 Operating System: RedHat 7.2
 PHP Version:      4.2.3
 New Comment:

In 4.3 zlib.output_compression will be PHP_INI_ALL and you can change
the value if the headers are not sent.

Also images won't be compressed automatically.


Previous Comments:
------------------------------------------------------------------------

[2002-11-27 14:02:12] sroussey@network54.com

zlib.output_compression is PHP_INI_SYSTEM|PHP_INI_PERDIR so it can't be
set in a script according to the manual (ini_set). Is this correct?
Does this change in 4.3?

------------------------------------------------------------------------

[2002-11-27 13:55:13] sroussey@network54.com

Using
  ini_set ( "zlib.output_compression", 1);// or "On" or 4096 ...
instead of:
  ob_start ('ob_gzhandler');

does not actually compress pages...

------------------------------------------------------------------------

[2002-11-27 13:12:35] sroussey@network54.com

The problem with setting it system wide is that it will try to compress
images and javascripts. No browser likes compressed images and Netscape
dies on compressed javascripts.

Or are you suggesting that I use:
  ini_set ( "zlib.output_compression", 1);
instead of:
  ob_start ('ob_gzhandler');
??

Does this work in PHP 4.2.3?

------------------------------------------------------------------------

[2002-11-27 11:30:07] wez@php.net

We recommend using zlib.outputcompression instead of ob_gzhandler;
maybe this will solve your issues, without
the need to upgrade PHP.

------------------------------------------------------------------------

[2002-11-27 09:31:15] sroussey@network54.com

One thing I forgot to add: I tried backporting all the fixes from CVS
that referenced crashes/segfaults from zlib.c, output.c, and streams.c
with no improvement.

In the middle of the night, I'm going to temporarily install 4.3RC1
which will disable the accelerator and kick the load average to the
roof, but hopefully I'll be able to check the error log for segfaults.

------------------------------------------------------------------------

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the rest of the comments, please view the bug report online at
    http://bugs.php.net/20551

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