问如何从SQL表中删除一行？

EN

foreach ($rows as $row)
{
    if($row["Symbol"] === $_POST["symbol"])
    {
     // I tried these combinations, but none of them works:
     // $sql = ("DELETE FROM stocks WHERE id = ? $_SESSION[id]");        
     // $sql = ("DELETE row FROM stocks WHERE id = $_SESSION[id]");
     // $sql = ("DELETE * FROM stocks WHERE id = $_SESSION[id]");
     // $sql = ("DELETE id, Symbol, Shares FROM stocks WHERE id = $_SESSION[id]");
      // DELETE FROM stocks WHERE id = $_SESSION["id"];
    }
}