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<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
    <to>Tove</to>
    <from>Jani</from>
    <heading>Reminder</heading>
    <body>Don't forget me this weekend!</body>
</note>

<?php
$xml = simplexml_load_file("note.xml");
print_r($xml);
?>

SimpleXMLElement Object ( [to] => Tove [from] => Jani [heading] => Reminder [body] => Don't forget me this weekend! )

<?php
$xml = simplexml_load_file("note.xml");
echo $xml->to . "<br>";
echo $xml->from . "<br>";
echo $xml->heading . "<br>";
echo $xml->body;
?>

Tove
Jani
Reminder
Don't forget me this weekend!

<?php
$xml = simplexml_load_file("note.xml");
echo $xml->getName() . "<br>";

foreach ($xml->children() as $child) {
    echo $child->getName() . ": " . $child . "<br>";
}
?>

note
to: Tove
from: Jani
heading: Reminder
body: Don't forget me this weekend!