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3 つの列 (ID、ユーザー名、パスワード) を持つテーブル korisnik が 1 つあります。次のようなものが欲しい:

$upit = "SELECT * FROM korisnik WHERE username = '" . $_POST['username'] . "'
AND password = SHA1('" . $_POST['password'] . "')";
$temp = $upit->fetch(PDO::FETCH_ASSOC); 
        $_SESSION['id'] = $temp['id'];

 if ($pdo_izraz->num_rows() == 1) {    
    session_start();
    $_SESSION['autorizovan'] = 1;
    $temp = $pdo_izraz->fetch(PDO::FETCH_ASSOC);
    $_SESSION['id'] = $temp['id'];

    $upit = ("Select * from korisnici where id=" . $_SESSION['id']);*
    $izraz = $dbh->query($upit);
    $obj = $izraz->fetch(PDO::FETCH_ASSOC);
    $username = $obj['username'];
    echo "<p id='bbb'><b >$username</b>:Welcome</p>";

CodeIgniter でこのようなことをしたい (id=1 行の配列 ($_SESSION['id']

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