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<?php
   $xml = simplexml_load_file("new.xml");
   $book = $xml->xpath("/contact/personal[title='Manager']");
   echo $book[0]->title;
?>

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<contact id="111">
     <personal>
          <name>
               <first>J</first>
               <middle>J</middle>
               <last>J</last>
          </name>
          <title>Manager</title>
          <employer>National Company</employer>
          <dob>1951-02-02</dob>
     </personal>
</contact>

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<?php
   $xml = simplexml_load_file("new.xml");
   $authors = $xml->xpath("/contact/personal/title");
   foreach($authors AS $author) {
      echo "$author<br />";
   }
?>

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<contact id="111">
     <personal>
          <name>
               <first>J</first>
               <middle>J</middle>
               <last>J</last>
          </name>
          <title>Manager</title>
          <employer>National Company</employer>
          <dob>1951-02-02</dob>
     </personal>
</contact>

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<?php
$employees = array();
$employees [] = array(
'name' => 'Devid',
'roll' => '34',
'marks' => "100"
);
$employees [] = array(
'name' => 'Claud',
'roll' => '20',
'marks' => "70"
);

$doc = new DOMDocument();
$doc->formatOutput = true;

$r = $doc->createElement( "students" );
$doc->appendChild( $r );

foreach( $employees as $employee )
{
$b = $doc->createElement( "student" );

$name = $doc->createElement( "name" );
$name->appendChild(
$doc->createTextNode( $employee['name'] )
);
$b->appendChild( $name );

$age = $doc->createElement( "roll" );
$age->appendChild(
$doc->createTextNode( $employee['roll'] )
);
$b->appendChild( $age );

$salary = $doc->createElement( "marks" );
$salary->appendChild(
$doc->createTextNode( $employee['marks'] )
);
$b->appendChild( $salary );

$r->appendChild( $b );
}

echo $doc->saveXML();
$doc->save("new.xml")
?>

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<?xml version="1.0"?>
<students>
  <student>
    <name>Devid</name>
    <roll>34</roll>
    <marks>100</marks>
  </student>
  <student>
    <name>Claud</name>
    <roll>20</roll>
    <marks>70</marks>
  </student>
</students>

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<?xml version="1.0" encoding="iso-8859-1"?>
<employees>
<employee>
<name>Mark</name>
<roll>27</roll>
<marks>50</marks>
</employee>
<employee>
<name>Jack</name>
<roll>25</roll>
<marks>40</marks>
</employee>
</employees>

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load( 'test.xml' );

$employees = $doc->getElementsByTagName( "employee" );
foreach( $employees as $employee )
{
$names = $employee->getElementsByTagName( "name" );
$name = $names->item(0)->nodeValue;

$rolls= $employee->getElementsByTagName( "roll" );
$roll= $rolls->item(0)->nodeValue;

$marks = $employee->getElementsByTagName( "marks" );
$marks = $marks->item(0)->nodeValue;

echo "<strong>$name</strong>";
echo "<strong>$roll</strong>";
echo "<strong>$marks</strong>";
}
?>

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Mark
27
50
Jack
25
40