function contatore($file_name) {
$fp = fopen($file_name, 'r');
$varcom = fread($fp, 26);
list ($nome, $valore) = split ('[=]', $varcom);
$buffer = $valore;
fclose($fp);
$buffer = (integer)$buffer +1;
$fp = fopen($file_name, 'w');
$buffer = "&numero=$buffer";
fwrite($fp, $buffer);
fclose($fp);
return $buffer;
}
$variabile=contatore("contatore.txt");
?>