codice:
<?php 
if(file_exists('testo.txt') {
   $contents = file_get_contents('testo.txt');
   $messages = explode("text=", $contents);
   foreach($messages as $message) {
        list($data, $name, $text) = sscanf($contents, "%8s_%s %s");
        echo "da $name del $data
".nl2br($text)."

";
   }
} else {
   echo "testo.txt non esiste, verifica il percorso";
}
?> 
</body> 
</html>