ID: 11321
Comment by: jpyeron at pdinc dot us
Reported By: olivier at lx dot student dot wau dot nl
Status: No Feedback
Bug Type: XML related
Operating System: Linux
PHP Version: 4.0.5
New Comment:
having this issue on:
PHP Version 4.3.2
System Windows NT xxxxxxxxxxxxxxx 5.2 build 3790
Build Date May 28 2003 15:06:05
Server API Apache
Virtual Directory Support enabled
Configuration File (php.ini) Path C:\WINDOWS\php.ini
PHP API 20020918
PHP Extension 20020429
Zend Extension 20021010
Debug Build no
Thread Safety enabled
Registered PHP Streams php, http, ftp, compress.zlib
and on:
PHP Version 4.3.9
System Linux xxxxxxxxxxxxxxxxxxx 2.6.9-55.ELsmp #1 SMP Wed May 2
14:28:44 EDT 2007 i686
Build Date Sep 20 2007 19:37:02
Configure Command './configure' '--build=i686-redhat-linux-gnu'
'--host=i686-redhat-linux-gnu' '--target=i386-redhat-linux-gnu'
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr'
'--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc'
'--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib'
'--libexecdir=/usr/libexec' '--localstatedir=/var'
'--sharedstatedir=/usr/com' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--cache-file=../config.cache'
'--with-config-file-path=/etc' '--with-config-file-scan-dir=/etc/php.d'
'--enable-force-cgi-redirect' '--disable-debug' '--enable-pic'
'--disable-rpath' '--enable-inline-optimization' '--with-bz2'
'--with-db4=/usr' '--with-curl' '--with-exec-dir=/usr/bin'
'--with-freetype-dir=/usr' '--with-png-dir=/usr' '--with-gd=shared'
'--enable-gd-native-ttf' '--without-gdbm' '--with-gettext'
'--with-ncurses=shared' '--with-gmp' '--with-iconv'
'--with-jpeg-dir=/usr' '--with-openssl' '--with-png' '--with-pspell'
'--with-xml' '--with-expat-dir=/usr' '--with-dom=shared,/usr'
'--with-dom-xslt=/usr' '--with-dom-exslt=/usr' '--with-xmlrpc=shared'
'--with-pcre-regex=/usr' '--with-zlib' '--with-layout=GNU'
'--enable-bcmath' '--enable-exif' '--enable-ftp' '--enable-magic-quotes'
'--enable-sockets' '--enable-sysvsem' '--enable-sysvshm'
'--enable-track-vars' '--enable-trans-sid' '--enable-yp' '--enable-wddx'
'--with-pear=/usr/share/pear' '--with-imap=shared' '--with-imap-ssl'
'--with-kerberos' '--with-ldap=shared' '--with-mysql=shared,/usr'
'--with-pgsql=shared' '--with-snmp=shared,/usr' '--with-snmp=shared'
'--enable-ucd-snmp-hack' '--with-unixODBC=shared,/usr'
'--enable-memory-limit' '--enable-shmop' '--enable-calendar'
'--enable-dbx' '--enable-dio' '--enable-mbstring=shared'
'--enable-mbstr-enc-trans' '--enable-mbregex'
'--with-mime-magic=/usr/share/file/magic.mime'
'--with-apxs2=/usr/sbin/apxs'
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /etc/php.ini
Scan this dir for additional .ini files /etc/php.d
additional .ini files parsed /etc/php.d/oci8.ini
PHP API 20020918
PHP Extension 20020429
Zend Extension 20021010
Debug Build no
Thread Safety disabled
Registered PHP Streams php, http, ftp, https, ftps, compress.bzip2,
compress.zlib
Previous Comments:
------------------------------------------------------------------------
[2006-10-12 14:33:36] jnicoll at seemysites dot net
I have also experienced this problem (or a similar problem) with PHP4's
native XML DOM techniques. Also happens on DOM n PHP5. I am running
PHP4 on my web server (Linux, don't know which version) and on my test
machine (Mac OS X 10.4.8) Every process I try chokes on Clickbank's 6MB
XML file and only outputs garbage data. PHP5's SimpleXML seems to work
well.
------------------------------------------------------------------------
[2002-02-27 00:00:02] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
------------------------------------------------------------------------
[2002-01-14 09:59:20] [EMAIL PROTECTED]
Is this reproducable on 4.1.1?
------------------------------------------------------------------------
[2001-06-06 16:18:52] olivier at lx dot student dot wau dot nl
When parsing large XML files the PHP module starts corrupting memory.
In large applications this may result in a segfault, in this example
application it results in corruption of the xml parser itself (at least
on my test machines).
The code below is tested on three different servers, 2 of them running
Debian/Stable (Potato) with a custom compiled PHP 4.0.5, one server
running Debian/Unstable (Sid) with the Debian default PHP module (also
4.0.5). All run PHP as Apache module.
The custom build modules are build like this:
./configure --with-apxs=/usr/bin/apxs --with-mysql=/usr
--with-config-file-path=/etc/php4/apache --with-interbase=shared
--with-gnu-ld --with-xml --with-gd=shared
When using a small XML file, the code below runs fine, but when the XML
file gets bigger PHP starts complaining Unable to call handler
end_tag_handler() , Unable to call handler data_handler() or Unable to
call handler start_tag_handler().
The code:
<?php
class properties {
var $parser;
}
class my_class {
var $mydata;
var $mystarttag;
var $myendtag;
function my_class(&$props) {
xml_set_object($props->parser,&$this);
xml_set_element_handler($props->parser, 'start_tag_handler',
'end_tag_handler');
xml_set_character_data_handler($props->parser, 'data_handler');
}
function data_handler($parser, $data) {
$this->mydata .= $data;
}
function start_tag_handler($parser, $name, $attrs) {
$this->mystarttag .= $name;
}
function end_tag_handler($parser, $name) {
$this->myendtag .= $name;
echo 'end tag is '.$name.'<br>';
}
}
function first_element_handler($parser, $name, $attrs) {
global $props;
if ($name == 'QUESTION') {
/* normally I decide here, depending on $attrs what
kind of object I should create. For debugging purposes
I use just one object. */
$q_obj = new my_class($props);
} else {
die('This XML file has an unknown content');
}
}
function start_parsing($file) {
global $props;
$props = new properties();
$props->parser = xml_parser_create();
xml_parser_set_option($props->parser, XML_OPTION_CASE_FOLDING, TRUE);
xml_set_element_handler($props->parser, 'first_element_handler', '');
if (!($fp = fopen($file, "r"))) {
die("could not open XML input");
}
while ($data = fread($fp, 4096)) {
if (!xml_parse($props->parser, $data, feof($fp))) {
die(sprintf("XML error: %s at line %d",
xml_error_string(xml_get_error_code($props->parser)),
xml_get_current_line_number($props->parser)));
}
}
xml_parser_free($props->parser);
}
echo 'start parsing';
start_parsing('val1.xml');
echo 'finished parsing';
?>
The XML file looks like this, but to see the problems the part between
<question> and </question> should be four times bigger:
<question type="VALUE">
<title>Fermentor size</title>
<hint>4032 hours a year, makes 96 runs a year. How many kg per cubic
meter per year do you produce?</hint>
<hint>That is 10 X 96 = 960 kg per cubic meter per year</hint>
<hint>You need 10.000 kg, so you need 10.4 cubic meter
production</hint>
<hint>You can't fill the reactor 100%, so let's assume 12 cubic meter
will do</hint>
<range correct="1">
<minval>11</minval>
<maxval>15</maxval>
<feedback>Very good! <b>Assuming</b> you can fill a
reactor....</feedback>
</range>
<range correct="0">
<minval>1</minval>
<maxval>11</maxval>
<feedback>Sorry, try again</feedback>
</range>
</question>
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=11321&edit=1
