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1 lars 1 
<?PHP
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/**
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 * This example shows how to use the XML_UNSERIALIZER_OPTION_FORCE_ENUM
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 * option
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 *
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 * @author  Stephan Schmidt <schst@php.net>
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 */
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error_reporting(E_ALL);
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require_once 'XML/Unserializer.php';
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$xml1 = '<root>
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   <item>
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     <name>schst</name>
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   </item>
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   <item>
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     <name>luckec</name>
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   </item>
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 </root>';
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$xml2 = '<root>
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   <item>
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     <name>schst</name>
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   </item>
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 </root>';
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$options = array(
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                  XML_UNSERIALIZER_OPTION_FORCE_ENUM => array('item')
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                );
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//  be careful to always use the ampersand in front of the new operator
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$unserializer = &new XML_Unserializer($options);
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// userialize the document
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$status = $unserializer->unserialize($xml1);
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if (PEAR::isError($status)) {
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    echo 'Error: ' . $status->getMessage();
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} else {
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    $data = $unserializer->getUnserializedData();
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    echo '<pre>';
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    print_r($data);
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    echo '</pre>';
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}
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// userialize the document
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$status = $unserializer->unserialize($xml2);
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if (PEAR::isError($status)) {
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    echo 'Error: ' . $status->getMessage();
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} else {
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    $data = $unserializer->getUnserializedData();
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    echo '<pre>';
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    print_r($data);
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    echo '</pre>';
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}
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?>