- preg_match: documentation ( source)
- print_r: documentation ( source)
<?php
$extra = '<?xml version="1.0" encoding="UTF-8"?><prato>Nouvelle Cuisine</prato><coreg_3190_resposta>voyages</c';
$regex = '/3190_resposta>([^\\<]*)/';
preg_match($extra, $regex, $match);
print_r( [$match] );