From: sramage at nucleuslabs dot com
Operating system: FREEBSD 5
PHP version: 4.4.4
PHP Bug Type: *Compression related
Bug description: gztell returns incorrect file pointer number
Description:
------------
The GZTELL function returns the gz file pointer as the uncompressed data
byte position not the real file pointer location when writing to a file.
I am not sure if this is a bug or just the way it is. but it doesn't
really make sense so I am reporting it.
The example is very simple and clear.
just use any text file that is 2 MB or bigger in length to recreate this
bug
We use the recommened php ini with the following changes:
memory_limit = 32M
error_reporting = E_COMPILE_ERROR|E_ERROR|E_CORE_ERROR
upload_max_filesize = 10Mb
session.cookie_lifetime = 0
session.cookie_path = /
session.gc_probability = 1
session.gc_divisor = 1
session.gc_maxlifetime = 3600
session.entropy_length = 16
session.entropy_file = /dev/urandom
modules:
'./configure' '--enable-versioning' '--enable-memory-limit'
'--with-layout=GNU' '--disable-all' '--with-regex=php' '--with-pcre-regex'
'--with-pear' '--enable-ftp' '--with-openssl=/usr/local/ssl' '--enable-ftp'
'--with-mysql=/usr/local/mysql' '--enable-overload' '--enable-session'
'--enable-xml' '--with-zlib=yes' '--with-apxs=/usr/local/apache/bin/apxs'
'--prefix=/usr/local/php' '--with-config-file-path=/usr/local/php'
'--enable-mbstring=all' '--enable-track-vars'
'--enable-force-cgi-redirect' '--with-gettext' '--with-pspell'
Reproduce code:
---------------
<?
//Example:
//some_file.sql plain text file - filesize = 2,048,000 bytes
$text_fp=fopen('some_file.sql','r');
$gz_fp=gzopen('some_file.sql.gz','wb9');
while(!feof($text_fp)){
gzwrite($gz_fp,fread($text_fp,655360));
}
fclose($text_fp);
echo "gztell = ".gztell($gz_fp)."<BR>\n";
gzclose($gz_fp);
echo "filesize = ".filesize('some_file.sql.gz')."<BR>\n";
?>
Expected result:
----------------
gztell = 249264
filesize = 249264
(or something closer to the actual file pointer position in the gz file)
Actual result:
--------------
gztell = 2048000
filesize = 249264
--
Edit bug report at http://bugs.php.net/?id=39874&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=39874&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=39874&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=39874&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=39874&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=39874&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=39874&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=39874&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=39874&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=39874&r=support
Expected behavior: http://bugs.php.net/fix.php?id=39874&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=39874&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=39874&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=39874&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=39874&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=39874&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=39874&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=39874&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=39874&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=39874&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=39874&r=mysqlcfg
