<?php

$xml = <<<XML
<?xml version="1.0"?>
<Submissions>
   <Submission>
      <zaman>18.07.2015 22:28:57</zaman>
         <data>
            <name>birinci</name>
            <message>1</message>
         </data>
</Submission>
   <Submission>
      <zaman>18.07.2015 22:29:07</zaman>
         <data>
            <name>ikinci</name>
            <message>2</message>
         </data>
</Submission>
   <Submission>
      <zaman>18.07.2015 22:29:14</zaman>
         <data>
            <name>ucuncu</name>
            <message>3</message>
         </data>
   </Submission>
</Submissions>
XML;

$xml = simplexml_load_string($xml);

foreach ($xml->Submission as $submission)
{
	echo 'zaman: ' . $submission->zaman . '<br />';
	echo 'data: <br />';
	echo '-> name: ' . $submission->data->name . '<br />';
	echo '-> message: ' . $submission->data->message . '<br />';
}