rieccolo
$datas=date("y-m-d");
$file =("log/20$datas.log");
$news=fopen("$file","r"); //apre il file
while (!feof($news)) {
$buffer = fgets($news, 4096);
$sss=nl2br($buffer);
$array = explode(";",$sss);
$ora=$array[0];
$cod=$array[2];
$pot=$array[3];
$ene=$array[4];
$db = mysql_connect('localhost', 'root', '');
if (!$db) {
die ('Non riesco a connettermi: ' . mysql_error());
}
$db_selected = mysql_select_db('pvi200',$db);
mysql_query("INSERT INTO mia_tabella (time,cod,pot,ene,data) VALUES('$ora','$cod','$pot','$ene','$datas')");

}

fclose ($news); #chiude il file

mysql_close()