Update the PHP SWIG version to PHP 7, with various crash fixes, too.

[xml-template] / php5 / simple.php

<?php
require('xml-template.php');

$doc = XML_Template_process_file('../xml/simple.xml', array( 
        'title' => 'A very basic example',
        '#hello' => 'Hello world!'
));
print $doc->saveXML();
?>