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Bug #29657 xml_* functions throw non descriptive error, compared to php4
Submitted: 2004-08-13 17:53 UTC Modified: 2004-08-19 14:39 UTC
From: black at scene-si dot org Assigned:
Status: Closed Package: XML related
PHP Version: 5.0.0 OS: debian
Private report: No CVE-ID:
 [2004-08-13 17:53 UTC] black at scene-si dot org
Description:
------------
when validating an incorrectly formated xml file, the errors from php 5.0.0 are vaguely descriptive, outputting some constant name and not a human readable error message

Reproduce code:
---------------
#!/usr/bin/php5
<?php

if ($argc<2) {
        echo "Usage: ".$PHP_SELF." file.xml\n";
        exit;
}

$file = $argv[1];
$depth = array();

function startElement($parser, $name, $attrs) {}
function endElement($parser, $name) {}

$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement", "endElement");
if (!($fp = fopen($file, "r"))) {
   die("could not open XML input");
}

while ($data = fread($fp, 4096)) {
   if (!xml_parse($xml_parser, $data, feof($fp))) {
       die(sprintf("XML error: %s at line %d",
                   xml_error_string(xml_get_error_code($xml_parser)),
                   xml_get_current_line_number($xml_parser)));
   }
}
xml_parser_free($xml_parser);


Expected result:
----------------
XML error: mismatched tag at line 14

(from php4, identical code)

Actual result:
--------------
XML error: XML_ERR_TAG_NAME_MISMATCH at line 14

(php5 output)

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 [2004-08-14 10:52 UTC] chregu@php.net
libxml2 (used for ext/xml in PHP 5) has many many more 
error messages than expat (in PHP 4) and is therefore 
more descriptive about what really is wrong. But noone 
bothered to really translate the messages into plain 
english. I'm currently doing it for the more obvious 
messages

But don't expect the same Error Message in PHP 4 and PHP 
5, nor the same error numbers. As said, there are many 
more error messages in libxml2.


 [2004-08-19 14:39 UTC] chregu@php.net
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.


 
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