try
{
$con = new PDO("mysql:host=".$db_host.";dbname=...");
$count = $con->exec("DELETE FROM table_name WHERE user_name = 'dan'");
echo "Delete $count rows <br />";
}
catch (PDOException $e)
{
echo $e->getFile() . " : " . $e->getLine() . " : " . $e->getMessage();
}
/*
run:
Delete 1 rows
*/