I need to use javascript instead of PHP code for redirect to other page

Question

Suppose that I have the code as below:

<?php 
    include ('include/connectdb.php');
    if(isset($_POST['tbn_submit'])){
        $username = $_POST['text_username'];
        $password = $_POST['text_password'];
        $query = "SELECT * FROM tblusers WHERE `user_username`='".$username."' AND user_password='".$password."'";
        $res = mysql_query($query) or die (mysql_error());
        if($res){
            if(mysql_num_rows($res)){
                $user = mysql_fetch_assoc($res);
                if($user['user_possition'] == "Admin"){
                    echo '<script type="text/javascript">window.location = "view_form.php"</script>';
                }
                else if($user['user_possition'] == "User"){
                    header("location:view_edit_uid.php?uid=".$user['user_id']);
                    //in this point I need to use javascript instead of php code but I do not know how to write it
                }                                       
                else if($user['user_possition'] == "R1"){
                    echo '<script type="text/javascript">window.location = "view_form_res1.php"</script>';
                }
                else if($user['user_possition'] == "R2"){
                    echo '<script type="text/javascript">window.location = "view_form_res2.php"</script>';
                }                               
            } 
            else {
                echo '<tr><td colspan="2"><center><b style="color:red;">Invalide username or password, please check again!</b></center></td></tr>';             
            }
        } 
    }
?>

Problem

I need to get the $user['user_id'] to use in javascript like

`echo '<script type="text/javascript">window.location = "view_edit_uid.php?uid=".$user['user_id']</script>';`

but it dose not work, because it do not know $user['user_id'] in javascript,So how do I fix this?

Anyone help me please,Thanks.

You are using [an **obsolete** database API](http://stackoverflow.com/q/12859942/19068) and should use a [modern replacement](http://php.net/manual/en/mysqlinfo.api.choosing.php). You are also **vulnerable to [SQL injection attacks](http://bobby-tables.com/)** that a modern API would make it easier to [defend](http://stackoverflow.com/questions/60174/best-way-to-prevent-sql-injection-in-php) yourself from. — Quentin, Nov 14 '12 at 06:47
[Do not store passwords in clear text](https://www.owasp.org/index.php/Password_Storage_Cheat_Sheet)! — Quentin, Nov 14 '12 at 06:47
Why do this in JavaScript and not HTTP? And HTTP redirect is the appropriate way to do this sort of thing (since it is more efficient and doesn't mess up the back button) — Quentin, Nov 14 '12 at 06:48

Pastor Bones · Answer 1 · 2012-11-14T06:54:28.357

3

You have to echo it just like you would any PHP variable.

<script type="text/javascript">
  window.location = "view_edit_uid.php?uid=<?php echo $user['user_id']; ?>";
</script>

Or to redirect specifically with PHP...you must perform this before any other headers are sent.

header( 'Location: view_edit_uid.php?uid=' . $user['user_id'] ) ;

edited Nov 14 '12 at 06:54

answered Nov 14 '12 at 06:44

Pastor Bones

7,183
3
36
56

score 1 · Answer 2 · answered Nov 14 '12 at 06:48

1

echo '<script type="text/javascript">window.location = "view_edit_uid.php?uid='.$user['user_id'].'"</script>';

You left out some " and '.

answered Nov 14 '12 at 06:48

Joseph

238
1
9

score 1 · Answer 3 · answered Nov 14 '12 at 06:50

Yes, you can use window.location

else if($user['user_possition'] == "User"){
    //header("location:view_edit_uid.php?uid=".$user['user_id']);
    echo '<script type="text/javascript">window.location = "view_edit_uid.php?uid='.$user['user_id'].'"</script>';
}

score 1 · Answer 4 · answered Nov 14 '12 at 06:53

1

echo '<script type="text/javascript">window.location = "view_edit_uid.php?uid='.$user['user_id'].'";</script>';

answered Nov 14 '12 at 06:53

Miracle

11
3

I need to use javascript instead of PHP code for redirect to other page

4 Answers4