Description:
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Problem: You have a main window that manipulates and diplays data from a $_SESSION array. You cannot open a popup window, then manipulate your sessions in the main window, then reload your popup window without corrupting your session. 

At first glance, it seems to work right, but once you start testing, you realize that it just doesn't work. Sometimes you get the correct data, usually you don't. I'm using version 4.2.3 (yes i know...upgrade), but I originally saw this reported as a bug in an earlier PHP version and the PHP team said it wasn't a bug, not because they tested it, but because they said it was impossible for it to happen due to the way PHP is written because PHP serializes all session requests, locks the sessions..blah, blah, blah. I can therefore, only assume that the bug still exists in later versions as it is present in version 4.2.3 and I've found no reports of it being fixed or even acknowledged as a bug. I found at least one other person on phpbuilder.com who had the same problem and finally solved it by giving up on sessions and passing his data in a query string.

Config Info:

Env: i386-redhat-linux-gnu

'./configure' '--prefix=/usr/local/' '--with-apache=../../new_apache/apache_1.3.27' '--with-openssl=/usr/local/ssl' '--enable-shared' '--enable-versioning' '--enable-pic' '--disable-posix-threads' '--with-openssl=/usr/local/ssl' '--disable-debug' '--enable-magic-quotes' '--disable-rpath' '--with-zlib' '--enable-bcmath' '--enable-calendar' '--enable-ftp' '--enable-exif' '--with-curl=/usr' '--with-cybercash=/usr/local/cybercash/mck-3.2.0.6-i586-pc-linux-gnulibc2.1' '--with-gdbm=/usr' '--enable-dbase' '--with-gd=/usr/local' '--enable-gd-native-ttf' '--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--with-freetype-dir=/usr' '--with-gmp' '--with-imap=/usr/local' '--with-imap-ssl=/usr/local/ssl' '--enable-mbstring' '--enable-mbstr-enc-trans' '--enable-mbregex' '--with-mcrypt=/usr' '--with-mhash=/usr' '--with-mysql=/usr/local/mysql' '--enable-sockets' '--with-regex=system' '--enable-wddx' '--with-expat-dir=/usr' '--enable-xslt' '--with-xslt-sablot=/usr' '--enable-inline-optimization'

Reproduce code:
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My code is way too big to post here. If anyone wants to take this bug seriously, please e-mail me at brett at realestate-school.com (address obfuscated..just format it like a normal e-mail address) and I will provide code samples.