From: missingno at ifrance dot com
Operating system: Ubuntu 7.10
PHP version: 5.3CVS-2008-01-06 (snap)
PHP Bug Type: DOM XML related
Bug description: validateOnParse & validate() give difference results
Description:
------------
>From what I understand, DOMDocument::validateOnParse() = TRUE &
DOMDocument::validate() should return the same list of errors for a given
document.
But when dealing with HTML code, validate() seems to fail to deal with the
DTD correctly.
Therefore, using validate() & validateOnParse gives different results.
I think that in the case of validate(), PHP calls libxml with options that
make it think it will be dealing with XML code and thus, an XML DTD. So,
once libxml loads the HTML DTD, it fails to parse it correctly and returns
a bunch of errors.
(HTML & XML DTDs are similar, except that HTML ones allow for some more
constructs like the '&' operator in ELEMENT declarations)
Reproduce code:
---------------
<?php
/* Note: removing the system identifier doesn't change the result,
* except that "errors" in the DTD are caught immediately.
* (My guess would be that libxml tries to fetch the DTD from the
* system identifier instead of using a catalog for resolution) */
$markup = <<<HTML
<!DOCTYPE HTML PUBLIC
"-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
<html>
<head><title>Foo</title></head>
<body><p>Bar</p></body>
</html>
HTML;
header('Content-Type: text/plain');
libxml_use_internal_errors(TRUE);
// First, using DOMDocument::validateOnParse.
libxml_clear_errors();
$dd1 = new DOMDocument();
$dd1->validateOnParse = TRUE;
echo "Using validateOnParse:\n";
$dd1->loadHTML($markup);
var_dump(libxml_get_errors());
echo "\n\n";
// Now, using DOMDocument::validate() instead.
libxml_clear_errors();
$dd2 = new DOMDocument();
$dd2->validateOnParse = FALSE;
echo "Using validate():\n";
$dd2->loadHTML($markup);
$dd2->validate();
var_dump(libxml_get_errors());
?>
Expected result:
----------------
Using validateOnParse:
array(0) {
}
Using validate():
array(0) {
}
Actual result:
--------------
Using validateOnParse:
array(0) {
}
Using validate():
array(3) {
[0]=>
object(LibXMLError)#3 (6) {
["level"]=>
int(3)
["code"]=>
int(37)
["column"]=>
int(1)
["message"]=>
string(55) "xmlParseEntityDecl: entity HTML.Version not terminated
"
["file"]=>
string(36) "http://www.w3.org/TR/html4/loose.dtd";
["line"]=>
int(31)
}
[1]=>
object(LibXMLError)#4 (6) {
["level"]=>
int(3)
["code"]=>
int(60)
["column"]=>
int(1)
["message"]=>
string(37) "Content error in the external subset
"
["file"]=>
string(36) "http://www.w3.org/TR/html4/loose.dtd";
["line"]=>
int(31)
}
[2]=>
object(LibXMLError)#5 (6) {
["level"]=>
int(2)
["code"]=>
int(517)
["column"]=>
int(0)
["message"]=>
string(74) "Could not load the external subset
"http://www.w3.org/TR/html4/loose.dtd";
"
["file"]=>
string(0) ""
["line"]=>
int(0)
}
}
--
Edit bug report at http://bugs.php.net/?id=43771&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43771&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43771&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43771&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43771&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43771&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43771&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43771&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43771&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43771&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43771&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43771&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43771&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43771&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43771&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43771&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43771&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43771&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43771&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43771&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43771&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43771&r=mysqlcfg
