XML validation using XSD source.

xmlvalidationusingxsd.php

<?php
function libxml_display_error($error) 
{ 
$return = "<br/>\n"; 
switch ($error->level) { 
case LIBXML_ERR_WARNING: 
$return .= "<b>Warning $error->code</b>: "; 
break; 
case LIBXML_ERR_ERROR: 
$return .= "<b>Error $error->code</b>: "; 
break; 
case LIBXML_ERR_FATAL: 
$return .= "<b>Fatal Error $error->code</b>: "; 
break; 
} 
$return .= trim($error->message); 
if ($error->file) { 
$return .= " in <b>$error->file</b>"; 
} 
$return .= " on line <b>$error->line</b>\n"; 

return $return; 
} 

function libxml_display_errors() { 
$errors = libxml_get_errors(); 
foreach ($errors as $error) { 
print libxml_display_error($error); 
} 
libxml_clear_errors(); 
} 

################################## Done with Helper functions ######################

// Enable user error handling 
libxml_use_internal_errors(true); 

$xsdData = '<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:element name="lures">
 <xs:complexType> 
  <xs:sequence>
   <xs:element name="lure">
    <xs:complexType>
     <xs:sequence>
     <xs:element name="lureName" type="xs:string"/>
     <xs:element name="lureCompany" type="xs:string"/>
     <xs:element name="lureQuantity" type="xs:integer"/>
     </xs:sequence>
    </xs:complexType>
   </xs:element>
  </xs:sequence>
 </xs:complexType>
</xs:element>
</xs:schema>';


$xmlData = '<lures>
 <lure>
  <lureName>Silver Spoon</lureName>
  <lureCompany>Clark</lureCompany>
  <lureQuantity>Seven</lureQuantity>
 </lure>
</lures>';




$xml = new DOMDocument(); 
$xml->loadXML($xmlData); 

if (!$xml->schemaValidateSource($xsdData)) { 
print '<b>Errors Found!</b>'; 
libxml_display_errors(); 
} 
else { 
echo "validated<p/>"; 
} 

?>