xml validation question using a DTD for a newbie

Question

I am attempting to find out why this xml document will not validate. I am new to this, but it all looks good. I am attemtping to validate it at http://www.validome.org/grammar/validate/ my xml document named contacts1.xml looks like this...

<?xml version=”1.0”?>
<!DOCTYPE contacts SYSTEM “contacts1.dtd”>
<contacts>
<contact>
<name>
<first>Jeff</first>
<middle>Craig</middle>
<last>Rafter</last>
</name>
<location>
<latitude>34.031892</latitude>
<longitude>-117.207642</longitude>
</location>
<phone>001-909-555-1212</phone>
<knows>David Hunter, Danny Ayers</knows>
<description>Jeff is a developer and author for Beginning XML <em>4th
edition</em>.<br/>Jeff <strong>loves</strong> XML!</description>
</contact>
</contacts>

my DTD document named contacts1.dtd looks like this...

<!ELEMENT contacts (contact)>
<!ELEMENT contact (name, location, phone, knows, description)>

<!ELEMENT name (first, middle, last)>
<!ELEMENT first (#PCDATA)>
<!ELEMENT middle (#PCDATA)>
<!ELEMENT last (#PCDATA)>

<!ELEMENT location (address | (latitude, longitude))>
<!ELEMENT address (#PCDATA)>
<!ELEMENT latitude (#PCDATA)>
<!ELEMENT longitude (#PCDATA)>

<!ELEMENT phone (#PCDATA)>
<!ELEMENT knows (#PCDATA)>

<!ELEMENT description (#PCDATA | em | strong | br)*>
<!ELEMENT em (#PCDATA)>
<!ELEMENT strong (#PCDATA)>
<!ELEMENT br EMPTY>

The error message I get from the validator says

Value following "version" within text declaration must be a quoted string.

Can someone please tell me what the problem is, it all appears to be typed in correctly

Answer 1

You have some rather fancy quotation marks on the first line which are not permitted. Use plain-old-ASCII (ISO-646) single or double quotes.