Writing a script that POSTed XML query to a java servlet, the servlet would crash, saying that the XML document didn't follow the DTD...  the call went something like this:

echo htmlspecialchars(td_msg_query($blah->MsgXML()));

This would always give an error.

However, whenever we did this:

$test = $blah->MsgXML();
echo htmlspecialchars(td_msg_query($test));

It would work just fine.

$blah is an XML string builder class and td_msg_query does HTTP POSTs via php sockets.  a string is returned from MsgXML containing an entire XML document.  td_msg_query returns the response from the server after the POST.

System Linux major 2.4.17 #60 SMP Thu Jan 24 17:41:40 CST 2002 i686 unknown 
Build Date Mar  6 2002 
Configure Command  './configure' '--prefix=/usr/local/php' '--with-dom=/usr/local/libxml' '--with-apache=../apache_1.3.20' '--with-openssl=/usr/local/ssl' '--enable-dbase' '--enable-ftp' '--with-zlib-dir' '--with-mysql=/usr/local/mysql' 
Server API Apache 
Virtual Directory Support disabled 
Configuration File (php.ini) Path /usr/local/php/lib/php.ini 
ZEND_DEBUG disabled 
Thread Safety disabled 
Zend Optimizer 1.2.0