From: [EMAIL PROTECTED]
Operating system: Mac OS X 10.1
PHP version: 4.0.6
PHP Bug Type: Reproducible crash
Bug description: $this isn't set in XML object handlers
xml_set_object() allows you to use an xml parser inside a
class and have it call class methods instead of global
functions. $this is not set properly within the context of
these handlers when called by the xml parser. This can
cause data loss (e.g. $this->variable is set by one of the
XML handlers and disappears after the parsing is finished)
or, if you try to call certain functions on $this such as
gettype() or classname() php will die with a bus error:
<?
class ThisBug {
var $XMLParser;
function ThisBug() {
$this->XMLParser = xml_parser_create();
xml_set_object($this->XMLParser, $this);
xml_parser_set_option($this->XMLParser,
XML_OPTION_CASE_FOLDING, false);
xml_set_element_handler($this->XMLParser,
"xmlStartElement", "xmlEndElement");
}
function parse() {
$xml = '<?xml version="1.0"?' . '><foo><bar></bar></foo>
';
if (!xml_parse($this->XMLParser, $xml, true)) {
die( sprintf("XML parse error: %s at line
%d\n",
xml_error_string(xml_get_error_code($this->XMLParser)),
xml_get_current_line_number($this->XMLParser) )
);
}
xml_parser_free($this->XMLParser);
}
function xmlStartElement($parser, $name, $attribs) {
print "Opening $name - \$this = " . gettype($this) . "\
n";
}
function xmlEndElement($parser, $name) {
print "Closing $name - \$this = " . gettype($this) . "\
n";
}
}
$CrashMe = new ThisBug();
$CrashMe->parse();
?>
chris@calaban:~/Development/netdiff $ php -q ThisBug.php
Opening foo - $this = object
Opening bar - $this = object
Closing bar - $this = object
Bus error
(uname -a = Darwin calaban.my.domain 1.4 Darwin Kernel
Version 1.4: Sun Sep 9 15:39:59 PDT 2001; root:xnu/xnu-
201.obj~1/RELEASE_PPC Power Macintosh powerpc)
IMPORTANT NOTE:
This appears to be identical to bug #12959, which was
marked bogus with the mistaken comment "you are trying to
use $this outside of a class so it does not work.", when
$this was being used inside a class, as it is here. This is
the entire point for having xml_set_object().
--
Edit bug report at: http://bugs.php.net/?id=13553&edit=1
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