$host = "localhost";
$login = "root";
$password = "pass";
$database = "db_loop";

$con = mysql_connect($host,$login,$password);
mysql_select_db($database);

while($i=0;$i< $i+1; $i++) { 

$sql = "INSERT INTO tbl_loop(id) values('$i')";
$output = mysql_query($sql);

}