XML_Serializer::setOption Tutorial: Create an RSS Feed
XML_Serializer
PEAR Manual

Example

Example -- Example for the usage of XML_Serializer

Build a simple XML document

Example that uses the returnResult option to directly return the serialized XML document in the serialize() method.

In this example look at theses 3 lines. 

    
<?php
$serializer = &new XML_Serializer($options);
$foo = PEAR::raiseError('Just a test', 1234);
$result = $serializer->serialize($foo);
?>


   
    
<?php
error_reporting(E_ALL);
require_once 'XML/Serializer.php';
$options = array(
  XML_SERIALIZER_OPTION_INDENT        => '    ',
  XML_SERIALIZER_OPTION_RETURN_RESULT => true
  );

$serializer = &new XML_Serializer($options);

$foo = PEAR::raiseError('Just a test', 1234);

$result = $serializer->serialize($foo);

echo '<pre>';
echo htmlspecialchars($result);
echo '</pre>';
?>

And this is the result 

<pear_error>
    <error_message_prefix />
    <mode>1</mode>
    <level>1024</level>
    <code>1234</code>
    <message>Just a test</message>
    <userinfo />
    <backtrace>
        <XML_Serializer_Tag>
            <file>pathToMypear\PEAR.php</file>
            <line>566</line>
            <function>pear_error</function>
            <class>pear_error</class>
            <type>-&gt;</type>
            <args>
                <XML_Serializer_Tag>Just a test</XML_Serializer_Tag>
                <XML_Serializer_Tag>1234</XML_Serializer_Tag>
                <XML_Serializer_Tag>1</XML_Serializer_Tag>
                <XML_Serializer_Tag>1024</XML_Serializer_Tag>
                <XML_Serializer_Tag />
            </args>
        </XML_Serializer_Tag>
        <XML_Serializer_Tag>
            <file>pathToMyDocRoot\cvs.php.net\pear\xml_serializer\examples\serializeandreturn.php</file>
            <line>19</line>
            <function>raiseerror</function>
            <class>pear</class>
            <type>::</type>
            <args>
                <XML_Serializer_Tag>Just a test</XML_Serializer_Tag>
                <XML_Serializer_Tag>1234</XML_Serializer_Tag>
            </args>
        </XML_Serializer_Tag>
    </backtrace>
    <callback />
</pear_error>

You can find the last version of this source code in the package : serializeAndReturn.php

Build a RDF document

This example shows how to create an RDF document with a few lines of code. This can also be done with mode => simplexml.

In this example look at theses 3 lines. 

    
<?php
$serializer = new XML_Serializer($options);
    $result = $serializer->serialize($rdf);
    echo    htmlentities($serializer->getSerializedData());
?>


   
    
<?php
/**
   * @see    serializeIndexedArray.php
   */
    error_reporting(E_ALL);

    require_once 'XML/Serializer.php';

    $options = array(
      "indent"          => "    ",
      "linebreak"       => "\n",
      "typeHints"       => false,
      "addDecl"         => true,
      "encoding"        => "UTF-8",
      "rootName"        => "rdf:RDF",
      "rootAttributes"  => array("version" => "0.91"),
      "defaultTagName"  => "item",
      "attributesArray" => "_attributes"
      );
    
    $serializer = new XML_Serializer($options);

    $rdf = array(
      "channel" => array(
        "title" => "Example RDF channel",
        "link"  => "http://www.php-tools.de",
        "image" => array(
          "title" => "Example image",
          "url"   => "http://www.php-tools.de/image.gif",
          "link"  => "http://www.php-tools.de"
          ),
        "_attributes" => array( "rdf:about" => "http://example.com/foobar.html" ),
        array(
          "title"       => "Example item",
          "link"    => "http://example.com",
          "_attributes" => array( "rdf:about" => "http://example.com/foobar.html" )
          ),
        array(
          "title"    => "Another item",
          "link"    => "http://example.com",
          "_attributes" => array( "rdf:about" => "http://example.com/foobar.html" )
          ),
        array(
          "title"    => "I think you get it...",
          "link"    => "http://example.com",
          "_attributes" => array( "rdf:about" => "http://example.com/foobar.html" )
          )
        )
      );
    
    $result = $serializer->serialize($rdf);
    
    if( $result === true ) {
        echo    "<pre>";
        echo    htmlentities($serializer->getSerializedData());
        echo    "</pre>";
    }
?>

And this is the result 

<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF version="0.91">
    <channel rdf:about="http://example.com/foobar.html">
        <title>Example RDF channel</title>
        <link xmlns:xlink="http://www.w3.org/1999/xlink">http://www.php-tools.de</link>
        <image>
            <title>Example image</title>
            <url>http://www.php-tools.de/image.gif</url>
            <link xmlns:xlink="http://www.w3.org/1999/xlink">http://www.php-tools.de</link>
        </image>
        <item rdf:about="http://example.com/foobar.html">
            <title>Example item</title>
            <link xmlns:xlink="http://www.w3.org/1999/xlink">http://example.com</link>
        </item>
        <item rdf:about="http://example.com/foobar.html">
            <title>Another item</title>
            <link xmlns:xlink="http://www.w3.org/1999/xlink">http://example.com</link>
        </item>
        <item rdf:about="http://example.com/foobar.html">
            <title>I think you get it...</title>
            <link xmlns:xlink="http://www.w3.org/1999/xlink">http://example.com</link>
        </item>
    </channel>
</rdf:RDF>

You can find the last version of this source code in the package : serializeRDF.php

Note : if you search how to parse (read) an RDF/RSS document, look at XML_RSS package.

Build a XML document with a DTD

This example shows how to add a DocType Declaration to the XML document

In this example look at theses 3 lines. 

    
<?php
$serializer = new XML_Serializer($options);
    $result = $serializer->serialize($rdf);
    echo    htmlentities($serializer->getSerializedData());
?>


   
    
<?php
error_reporting(E_ALL);

    require_once 'XML/Serializer.php';

    $options = array(
      "indent"     => "    ",
      "linebreak"  => "\n",
      "addDecl"    => true,
      "addDoctype" => true,
      "doctype"    => array(
        'uri' => 'http://pear.php.net/dtd/package-1.0',
        'id'  => '-//PHP//PEAR/DTD PACKAGE 0.1'
        )
      );
    
    $serializer = new XML_Serializer($options);

    $foo    =   PEAR::raiseError("Just a test", 1234);    
    
    $result = $serializer->serialize($foo);
    
    if( $result === true ) {
        echo '<pre>';
        echo htmlentities($serializer->getSerializedData());
        echo '</pre>';
    }
?>

And this is the result 

<?xml version="1.0"?>
<!DOCTYPE pear_error PUBLIC "-//PHP//PEAR/DTD PACKAGE 0.1" "http://pear.php.net/dtd/package-1.0">
<pear_error>
    <error_message_prefix />
    <mode>1</mode>
    <level>1024</level>
    <code>1234</code>
    <message>Just a test</message>
    <userinfo />
    <backtrace>
        <XML_Serializer_Tag>
            <file>pathToMyPear\PEAR.php</file>
            <line>566</line>
            <function>pear_error</function>
            <class>pear_error</class>
            <type>-&gt;</type>
            <args>
                <XML_Serializer_Tag>Just a test</XML_Serializer_Tag>
                <XML_Serializer_Tag>1234</XML_Serializer_Tag>
                <XML_Serializer_Tag>1</XML_Serializer_Tag>
                <XML_Serializer_Tag>1024</XML_Serializer_Tag>
                <XML_Serializer_Tag />
            </args>
        </XML_Serializer_Tag>
        <XML_Serializer_Tag>
            <file>pathToMyDocumentRoot\cvs.php.net\pear\xml_serializer\examples\serializewithdtd.php</file>
            <line>24</line>
            <function>raiseerror</function>
            <class>pear</class>
            <type>::</type>
            <args>
                <XML_Serializer_Tag>Just a test</XML_Serializer_Tag>
                <XML_Serializer_Tag>1234</XML_Serializer_Tag>
            </args>
        </XML_Serializer_Tag>
    </backtrace>
    <callback />
</pear_error>

You can find the last version of this source code in the package : serializeWithDTD.php

XML_Serializer::setOption Tutorial: Create an RSS Feed
XML_Serializer
PEAR Manual