XML Validation against XSD in PHP libxml

Question

I have created an xml like below

<Request>
    <RequestType>Logon</RequestType>
    <MobileId>23424</MobileId>
    <Password>123456Gg</Password>
</Request>

and my xsd file is like below code

<?xml version="1.0" encoding="utf-8"?>
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="Request" type="RequestType"/>
<xsd:complexType name="RequestType">
    <xsd:sequence>
        <xsd:element name="RequestType">
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:enumeration value="Logon"/>
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:element>
        <xsd:element name="MobileId" >
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:minLength value="0" />
                    <xsd:maxLength value="10" />
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:element>
        <xsd:element name="Password">
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:minLength value="0"/>
                    <xsd:maxLength value="255"/>
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:element>
    </xsd:sequence>
</xsd:complexType>
</xsd:schema>

I have used PHP'S DOMDocument's schemaValidate function to validate the xml against the xsd, and it gives following error

Fatal Error 4: Start tag expected, '<' not found on line 5 
Error 1872: The document has no document element. on line 0

But I have tested those two files (xml and xsd) in this link W3C XML Schema Online validation, and it successfully validates without showing any error.

What I have to do to get work this in php?

Note: my php libxml version is 2.7.8

User123456 · Accepted Answer · 2014-04-02T04:24:34.447

dom specially gives two functions to validate with schema. One is to give file path

$doc = new DOMDocument();
$doc->load('PATH TO XML');

$is_valid_xml = $doc->schemaValidate('PATH TO XSD');

or else you could use

$is_valid_xml = $doc->schemaValidateSource($source)

This source should be a string containing the schema. It seems that you are using schemaValidateSource function other than schemaValidate. (Once I was stuck in the same place) cheers

score 1 · Answer 2 · answered Jan 06 '14 at 13:20

1

Just close your xsd file:

</xsd:schema>

I try it now, and for me this works.

answered Jan 06 '14 at 13:20

Rafael Soufraz

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Sorry I have used valid xsd which it validates the xml in the mentioned url ([xml schema validation](http://www.utilities-online.info/xsdvalidation/#.UsqYpNIW2Fk)) Here I have missed to include – Kanagu Jan 06 '14 at 13:23
2

I got it to work, what I am doing wrong here is, I have used $xml = simplexml_load_string(xmlstring); then used that xml object into DOMDocument::loadXML($xml), when i used xmlstring directly into DOMDocument then it is working fine – Kanagu Jan 06 '14 at 13:46
Vote up for you for answering your own question. :p – Rafael Soufraz Jan 06 '14 at 13:56
Hey Kangu, What else did you do to fix this? I'm really struggling here. Like you described, if I hard code the xml into the loadXML method it works. If I try to post xml to the php page, I get.... "The document has no document element." – tree May 13 '14 at 22:41

XML Validation against XSD in PHP libxml

2 Answers2

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