Description:
------------
When using getAttribute to get the value of an attribute   
that contains an XML entity (eg. &#174) the returned value   
is neither the actual character that is being represented   
nor the characters that make up the entity '&' '#' '1' '7'   
'4'.  Instead there are two characters that are returned, A   
circumflex (Â) and, in this example, the registered  
trademark symbol (®).   
   
'./configure' '--prefix=/opt/php5' '--with-mysql'    
'--with-apxs2=/usr/sbin/apxs2' '--with-zlib' '--with-expat'    
'--enable-sigchild' '--with-openssl' '--enable-shared'    
'--enable-soap' '--with-gd' '--enable-mbstring'    
'--with-pgsql' '--with-imap=shared,/usr/lib'    
'--with-imap-ssl=no' '--with-gd'    
'--with-jpeg-dir=/usr/include' '--with-ldap' '--with-xsl'    
'--enable-memory-limit' '--enable-debug'    
'--with-libxml-dir=/usr'    
   
   

Reproduce code:
---------------
ent.php:
        $dom = new DomDocument();
        $dom->substituteEntities = true;
        $dom->resolveExternals = true;
        $dom->load('ent.xml');
        $dom->substituteEntities = true;
        $dom->resolveExternals = true;

        echo $dom->saveXml();
        $list = $dom->getElementsByTagName('bar');
        $node = $list->item(0);
        echo "\n===\n Attribute 'test' of node 'bar': ";
        echo $node->getAttribute("test");
        echo "\n===\n Attribute 'test' of node 'bar' with htmlentities: ";
        echo htmlentities($node->getAttribute("test"));
        echo "\n===\n";

ent.xml:
<?xml version="1.0"?>
<!DOCTYPE foo [
<!ENTITY reg "&#174;">
]>
<foo>
        <bar test="&reg;">&#174;</bar>
</foo>


Expected result:
----------------
<?xml version="1.0"?> 
<!DOCTYPE foo [ 
<!ENTITY reg "&#174;"> 
]> 
<foo> 
        <bar test="&#174;">&#174;</bar> 
</foo> 
 
=== 
 Attribute 'test' of node 'bar': &#174; 
=== 
 Attribute 'test' of node 'bar' with htmlentities: 
&amp;#174; 
=== 
 

Actual result:
--------------
<?xml version="1.0"?> 
<!DOCTYPE foo [ 
<!ENTITY reg "&#174;"> 
]> 
<foo> 
        <bar test="&#xAE;">&#xAE;</bar> 
</foo> 
 
=== 
 Attribute 'test' of node 'bar': ® 
=== 
 Attribute 'test' of node 'bar' with htmlentities: 
&Acirc;&reg; 
===