在使用数组条件（实现为Login）php的会话中使其成为true或false

Question

I want to go generate Login form with menu condition (from database), but in session if i always problem Error:

Fatal error: Can't use function return value in write context in

Notes : On line 44,45 are $_SESSION['barang'] and $_SESSION['transaksi']

The code is:

$sql = "SELECT * FROM user WHERE username = '$_POST[username]' AND password = '$_POST[password]'"; $result = mysql_query($sql); $temukan = mysql_num_rows($result); if ($temukan > 0) {  $log = mysql_fetch_assoc($result);  $_SESSION['username'] = $_POST['username'];  $hak_akses = explode(", ", $log['hak_akses']);  $_SESSION['barang'] = !empty(in_array("barang", $hak_akses)) ? "TRUE" : "FALSE";  $_SESSION['transaksi'] = !empty(in_array("transaksi", $hak_akses)) ? "TRUE" : "FALSE";  header("location:halaman_utama.php"); } else {  echo"Gagal Login ..."; }

Answer 1

Your first step should be to properly style your code so that others (and yourself!) can easily read it.

$sql = "SELECT * FROM user WHERE username = '$_POST[username]' AND password = '$_POST[password]'";

$result = mysql_query($sql);

$temukan = mysql_num_rows($result);

if ($temukan > 0) {
    $log = mysql_fetch_assoc($result);
    $_SESSION['username'] = $_POST['username'];
    $hak_akses = explode(", ", $log['hak_akses']);

    $_SESSION['barang'] = !empty(in_array("barang", $hak_akses)) ? "TRUE" : "FALSE";
    $_SESSION['transaksi'] = !empty(in_array("transaksi", $hak_akses)) ? "TRUE" : "FALSE";

    header("location:halaman_utama.php");
} else {
    echo"Gagal Login ...";
}

The function in_array() returns TRUE or FALSE already, so you probably want something more like:

$_SESSION['barang'] = in_array("barang", $hak_akses) ? "TRUE" : "FALSE";

$_SESSION['transaksi'] = in_array("transaksi", $hak_akses) ? "TRUE" : "FALSE";

Unless you need to store the actual strings TRUE or FALSE in the $_SESSION variable, then an even more simple solution would be:

$_SESSION['barang'] = in_array("barang", $hak_akses);

$_SESSION['transaksi'] = in_array("transaksi", $hak_akses);

This will will store 1 if the the string is in the array or 0 if it is not.