<?php
$s = simplexml_load_file('addresses.xml');
$emails = $s->xpath('/addresses/person/email');
 
foreach ($emails as $email) {
    // do something with $email
}
?>

<?xml version="1.0"?>
<addresses>
    <person>
        <name>Ramesh babu</name>
        <email>Ram@w3mauthor.com</email>
    </person>
    <person>
        <name>Jolld</name>
        <email>Jolld@w3mauthor</email>
    </person>
</addresses>