SQL query not returning value, setting to session variable

Question

I've been trying to set a value from my mysql server table field equal too the $_SESSION["mypermissions"] session variable. Whatever I try it comes up blank though or with a value 0. I feel like this is probably a stupid question and there's a simple solution but nothing seems to be working. Here is my code so far, look near the bottom for the sql query in question.

<?php
$host="localhost"; // Host name 
$username="root"; // Mysql username 
$password=""; // Mysql password 
$db_name="comproject"; // Database name 
$tbl_name="members"; // Table name 

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB");

// username and password sent from form 
$myusername=$_POST['myusername']; 
$mypassword=$_POST['mypassword']; 

// To protect MySQL injection
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){

session_start();
$_SESSION["myusername"] = $myusername;

$sql = "SELECT permissions FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$_SESSION["mypermissions"] = mysql_query($sql);

header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>

The problem is $_SESSION["mypermissions"] = mysql_query($sql);, you are assigning a resource to the session variable. Instead, you want to get a result from the query first. — Jon
– Jon, Commented Jan 14, 2014 at 16:52
Why are you selecting the same thing twice? First you do SELECT * and then SELECT permissions, but the WHERE condition is the same. You could extract the permissions from the result of the first query. — TiiJ7
– TiiJ7, Commented Jan 14, 2014 at 17:28

Awlad Liton · Accepted Answer · 2014-01-14 17:31:03Z

It seems that you did not fetch query result . you have to fetch result then based on result set session variable like this:

    <?php
    $host="localhost"; // Host name 
    $username="root"; // Mysql username 
    $password=""; // Mysql password 
    $db_name="comproject"; // Database name 
    $tbl_name="members"; // Table name 

    // Connect to server and select databse.
    mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
    mysql_select_db("$db_name")or die("cannot select DB");

    // username and password sent from form 
    $myusername=$_POST['myusername']; 
    $mypassword=$_POST['mypassword']; 

    // To protect MySQL injection
    $myusername = stripslashes($myusername);
    $mypassword = stripslashes($mypassword);
    $myusername = mysql_real_escape_string($myusername);
    $mypassword = mysql_real_escape_string($mypassword);
    $sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword' limit 1";
    $result=mysql_query($sql);

    // Mysql_num_row is counting table row
    $count=mysql_num_rows($result);

    // If result matched $myusername and $mypassword, table row must be 1 row
    if($count==1){  
    session_start();
    $_SESSION["myusername"] = $myusername;
    $row = mysql_fetch_object( $result);//fetch object
    $_SESSION["mypermissions"] = $row->permissions; // set permission to session   
    header("location:login_success.php");
    }

else {
echo "Wrong Username or Password";
}
?>

Nedret Recep · Accepted Answer · 2014-01-14 17:00:51Z

0

$res = mysql_query($sql);
$row = mysql_fetch_object($res);
$_SESSION["mypermissions"] = $row->permissions;

edited Jan 14, 2014 at 17:00

answered Jan 14, 2014 at 16:54

Nedret Recep

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