PHP - Need Help Setting A Session Variable

Hi all,

Yesterday I moved a web application from a normal cookie session to a use_trans_sid session because some users' browser didn't accept cookies.

This works great, but the session used to last for 45 minutes (set with session.gc_maxlifetime), but after the change the session times out faster.

(How) can I set the session length if I use use_trans_sid?

Thanks,

Base

PS: PHP version 5.2.13-1

Record set has 2 text fields in the form which is set in a full repeat recordset browse.  So, we get a long list of every record in the database.  However, I want to be able to click on a single record and make another page appear.  I can do this if the display is set as a table without using a text field form -- just the record variable and using a hyperlink.  But, I want to use the text field.  Wrapping the form only gets me the value of the last record displayed.  Help would be appreciated.

My login script stores the user's login name as $_SESSION[ 'name'] on login. For some unapparent reason, i'm getting errors stating that $user  and $priv are  undefined variables, though I've attempted to define $user as being equal to $_SESSION['name'], using $user to look up the the user's privilege level (stored as the su column ) in the SQL table, and then where the result of the sql query is $priv which is then evaluated in an if statement. I can't seem to figure out why this might not be working.

The code I'm using:

<?php
session_start();
function verify() {
	//verify that the user is logged in via the login page. Session_start has already been called. 
	if (!isset($_SESSION['loggedin'])) {
	header('Location: /index.html'); 
	exit;
	}
	//if user is logged in, we then lookup necessary privleges. $_SESSION['name'] was written with the login name upon login. Privleges   // are written in db as a single-digit integer of of 0 for users, 1 for administrators, and 2 for special users. 
        $user === $_SESSION['name'];
    //Connect to Databse
	$link = mysqli_connect("127.0.0.1", "database user", "password", "database");
	if (!$link) {
  	  echo "Error: Unable to connect to MySQL." . PHP_EOL;
    	echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
    	echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
    	exit;
        }
        //SQL Statement to lookup privlege information. 
       if ($result = mysqli_query($link, "SELECT su FROM accounts WHERE username = $user", MYSQLI_STORE_RESULT)) {
         //LOOP TO CYCLE THROUGH SQL RESULTS AND STORE Privlege information as vairable $priv.
            while ($row = $result->fetch_assoc()) {
           $priv === $row["su"];
            }
        }
        // close SQL connection.
        mysqli_close($link);

 // Verify privleges and take action. Only a privlege of "1" is allowed to view this page. A privlege of "2" indicates special 
//accounts used in other scripts that have certain indermediate additional functions, but are not trusted administrators. 

        if ($priv !== 1) {
        echo $_SESSION['name'];
        echo "you have privlege level of $priv";
        echo "<br>";
        echo 'Your account does not have the privleges necessary to view this page';
        exit;
        }
        
}
verify();
?>

 

Hello everyone,

I can get Test 2 to successfully operate the if statement using a variable variable.

But when I try the same method using a session variable (Test 1) the if statement is not executed. Please could you tell me why the if statement in Test 1 is not being executed?

Code: [Select]

<?php
# TEST 1
$_SESSION[test_variable] = "abcd";
$session_variable_name = "_SESSION[test_variable]";
if ($$session_variable_name == "abcd")
{
echo "<br>line 373, abcd<br>";
}

# TEST 2
$test_variable = "efgh";
$test_variable_name = "test_variable";
if ($$test_variable_name == "efgh")
{
echo "<br>line 379, efgh<br>";
}

?>
Many thanks,

Stu

 v=$("#txtusername");
  $.post('../actions/check.php',{user:v.val().toLowerCase()},function(d){
  if(d=='available'){
    $("#usernamemessage").html("<span style='color:green;'>Username is available</span>");
   }else  if(d=='not-available'){
  $( "#txtusername" ).effect( "shake" );
$('#txtusername').css('border', 'solid 2px blue');
 var iserror = '1'
 alert(iserror);
}
});

alert(iserror);

The first alert displays '1', however, the second displays 'undefined'. Why is this?

Thanks

Attempting to set a variable = NOW() + INTERVAL 90 DAY;
I can run SELECT DATE_ADD(NOW(), INTERVAL 90 DAY using MYSQL, but don't know how to move result to a variable.

Hi

I'm having a problem getting a query to work.

I have a simple form with user input for start and end date with format: 2009-03-19 (todays date):

$Startdate = $_POST['date'];

This works well when something is entered into the form, and afterwards using my query:

SELECT COUNT(*) as total FROM mydb WHERE Date BETWEEN '$Startdate' AND '$EndDate' ........

Problem is if user submits the form without entering anything in the date input fields, which makes sense.

I want to check if inputs has been made, and if not set af default date, but can't make it work:

if (isset($_POST['date']) && $_POST['date'] !='') {
$Startdate = $_POST['date'];}
else { $Startdate = '1980-01-01';}

How can I set $Startdate to something that can be used in the query as below doesn't work?

When I run

'select 1700-price as blah from goldclose as t2 order by dayid desc limit 1'

by itself in mysql I get a numerical result: one row, one column.

In my php script, the 1700 is actually a variable. so here it is

$changequery = sprintf("select $goldprice-price as change from goldclose order by dayid desc limit 1");
$change = mysql_query(changequery);
while ($row = mysql_fetch_array($change)) {
    printf("$row[0]"); 
}

mysql_free_result($changeresult);


I get the following error,

Warning:  mysql_fetch_array(): supplied argument is not a valid MySQL result resource in <b>/root/fuzzy/htmlmain4.php on line 99

Warning:  mysql_free_result(): supplied argument is not a valid MySQL result resource in <b>/root/fuzzy/htmlmain4.php on line 103

Not sure why? All i want is to get the result of that select statement into a variable such as $change

Hi

I am using very simple code. Here it is

Code: [Select]
<?php
session_start();
$user = "guest";
$uid = "1";
echo $_SESSION['user']."<br />";
echo $_SESSION['uid'];
?>
it displays this error
Code: [Select]
Notice: Undefined index: user in C:\wamp\www\DealDash\index.php on line 5
Notice: Undefined index: uid in C:\wamp\www\DealDash\index.php on line 6
how can I solve this problem? Help please

I wonder whether someone can help me please.

I'm using the script below to create a page whereby users are presented with a list of image folders they have created. Clicking on any of the folders allows the user to drill down and view the individual images.

Code: [Select]
<?php session_start(); 

$_SESSION['username']=$_POST['username'];
$_SESSION['locationid']=$_POST['locationid'];
 
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<?php 
  //This variable specifies relative path to the folder, where the gallery with uploaded files is located.
  $galleryPath = 'UploadedFiles/' . $_SESSION['username'] . '/' . $_SESSION['locationid'] . '/';
  
  $absGalleryPath = realpath($galleryPath) . DIRECTORY_SEPARATOR;  
  
  $descriptions = new DOMDocument('1.0');
  $descriptions->load($absGalleryPath . 'files.xml'); 
  
  $items = array();

  for ($i = 0; $i < $descriptions->documentElement->childNodes->length; $i++) {
    $xmlFile = $descriptions->documentElement->childNodes->item($i);
    $path = $xmlFile->getAttribute('name');
    $path = explode('/', $path);
    
    $t = &$items;
    for ($j = 0; $j < count($path); $j++) {
      if (empty($t[$path[$j]])) {
        $t[$path[$j]] = array();
      }
      $t = &$t[$path[$j]];
    }
    $t['/src/'] = $xmlFile->getAttribute('source');
    $t['description'] = $xmlFile->getAttribute('description');
    $t['size'] = $xmlFile->getAttribute('size');
  }
  
  $basePath = empty($_GET['path']) ? '' : $_GET['path'];
  if ($basePath) {
    $basePath = explode('/', $basePath);
    for ($j = 0; $j < count($basePath); $j++) {
      $items = &$items[$basePath[$j]];
    }
  }
  
  $files = array();
  $dirs = array();
  
  function urlpartencode(&$item, $index) {
    $item = rawurlencode($item);
  }
  
  foreach ($items as $key => $value) {
    if (isset($value['/src/'])) {
      $value['/src/'] = explode('/', $value['/src/']);
      array_walk($value['/src/'], 'urlpartencode');
      $value['/src/'] = implode('/', $value['/src/']);
      $files[] = array(
        'name' => $key,
        'src' => $value['/src/'],
        'description' => htmlentities($value['description'], ENT_COMPAT, 'UTF-8'),
        'size' => htmlentities($value['size'], ENT_COMPAT, 'UTF-8')
      ); 
    } else {
      $dirs[] = $key;
    }
  }
  
  $basePath = empty($_GET['path']) ? '' : $_GET['path'];
  $up = dirname($basePath);
  if ($up == '.') {
    $up = '';
  }
  
  sort($files);
  sort($dirs);
?>
<head>
  <title>View Image Folders</title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <link href="Styles/style.css" rel="stylesheet" type="text/css" />
  <script src="Libraries/jquery/jquery-1.4.3.min.js" type="text/javascript"></script>
   <style type="text/css">
<!--
.style1 {
font-size: 14px;
margin-top: 5px;
margin-right: -50px;
}

-->
  </style>
<body style="font-family: Calibri; color:  #505050; margin-right: 160px; margin-left: -180px;">
<div align="right" class="style1"> <a href = "index.php" /> Add Images <a/> &rarr; <a href = "javascript:document.imagefolders.submit()"> View All Images </a> </div>
<form id="imagefolders" name="imagefolders" class="page" action="gallery.php" method="post" enctype="application/x-www-form-urlencoded"> 
   <div id="container">
  </div>
    <div id="center">
      <div class="aB">
        <div class="aB-B">
          <?php if ('Uploaded files' != $current['title']) :?>
          <?php endif;?>
          <div class="demo">
  <input name="username" type="hidden" id="username" value="IRHM73" />
          <input name="locationid" type="hidden" id="locationid" value="1" />
            <div class="inner">
              <div class="container">
                <div class="gallery">
                  <table class="gallery-link-table" cellpadding="0" cellspacing="0">
                    <thead>
                      <tr class="head">
                        <th class="col-name">
                          Name
                        </th>
                        <th class="col-size">
                          Size
                        </th>
                        <th class="col-description">
                          Description
                        </th>
                      </tr>
                    </thead>

                    <tbody>
                      <tr class="directory odd">
                        <td class="col-name">
                          <a href="?path=<?php echo rawurlencode($up); ?>">..</a>
                        </td>
                        <td class="col-size">
                        </td>
                        <td class="col-description">
                        </td>
                      </tr>
                      <?php $i = 1; ?>
                      <?php foreach ($dirs as $dir) : ?>
                      <tr class="directory <?php $i++; echo ($i % 2 == 0 ? 'even' : 'odd'); ?>">
                        <td><a href="?path=<?php echo rawurlencode(($basePath ? $basePath . '/' : '') . $dir); ?>"><?php echo htmlentities($dir, ENT_COMPAT, 'UTF-8'); ?></a></td>
                        <td>Folder</td>
                        <td></td>
                      </tr>
                      <?php endforeach; ?>
                      <?php foreach ($files as $file) : ?>
                      <tr class="<?php $i++; echo ($i % 2 == 0 ? 'even' : 'odd'); ?>">
                        <td><a target="_blank" href="<?php echo $galleryPath . $file['src']; ?>"><?php echo htmlentities($file['name'], ENT_COMPAT, 'UTF-8'); ?></a></td>
                        <td><?php echo htmlentities($file['size'], ENT_COMPAT, 'UTF-8'); ?></td>
                        <td><?php echo htmlentities($file['description'], ENT_COMPAT, 'UTF-8'); ?></td>
                      </tr>
                      <?php endforeach; ?>
                    </tbody>
                  </table>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
  </div>
        </div>
      </div>
    </div>
</form>
</body>
</html>
I can create the list of folders, but when I click on any of these, instead of being able to view the images, I receive the following error:
Quote

Warning: DOMDocument::load() [domdocument.load]: I/O warning : failed to load external entity "/homepages/2/d333603417/htdocs/development/UploadedFiles/files.xml" in /homepages/2/d333603417/htdocs/development/imagefolders.php on line 16

Warning: Invalid argument supplied for foreach() in /homepages/2/d333603417/htdocs/development/imagefolders.php on line 52


Line 16 is this line Code: [Select]
$descriptions->load($absGalleryPath . 'files.xml'); and line 52 is this Code: [Select]
foreach ($items as $key => $value){
However, if I change this line Code: [Select]
$galleryPath = 'UploadedFiles/' . $_SESSION['username'] . '/' . $_SESSION['locationid'] . '/'; to
Code: [Select]
$galleryPath = 'UploadedFiles/' . 'IRHM73' . '/' . '1' . '/'; i.e. replacing the 'Session Variables' with the actual values, the page works.

I've been working on this for days now, and I just can't find the solution. I just wondered whether someoen could perhaps have a look at this and let me know where I'm going wrong.

Many thanks and regards

Need help declaring some session variable guys.

I have a login form where the member enters his
1. Pilot Callsign
2. Password

I want to declare that Pilot Callsign as the session variable on authentication.

Using that Pilot Callsign session variable, I will fetch data from the database relevant to his profile.

I already have the whole login page coded along with the restricted access pages (not coded by me).

Check this out

1. Page is coded like this and working PERFECTLY
---

Code: [Select]
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
}

$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}

if (isset($_POST['pilot_callsign'])) {
  $loginUsername=$_POST['pilot_callsign'];
  $password=$_POST['password'];
  
  mysql_select_db($database_brn_system, $brn_system);
  
  $LoginRS__query=sprintf("SELECT pilot_callsign, password, staff_level, firstname FROM pilots WHERE activated = 1 AND pilot_callsign=%s AND password=%s",
  GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text")); 
   
  $LoginRS = mysql_query($LoginRS__query, $brn_system) or die(mysql_error());
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
    
    $loginStrGroup  = mysql_result($LoginRS,0,'staff_level');
    
if (PHP_VERSION >= 5.1) {session_regenerate_id(true);} else {session_regenerate_id();}
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;      
?>
---

2. As you can see, there already is a session variable declared for Pilot Callsign
But on the next page "Restricted Access Page", when I try to call this same Session Variable, it doesn't work.

I tried doing this
<?php echo $_SESSION['MM_Username'] ?>

Moreover, I even tried to fetch data from the table like this -

SELECT * FROM pilots WHERE pilot_callsign=$_SESSION['MM_Username']

Doesn't work 

hi all , i am working on a script which is oop driven and i m not much familiar with it, i appericiate if someone can help me to solve this problem , so basicaly current script is only setting one session variable to true if user login $_SESSION['is_successful_login']  , here is my code
<?php
include('files/db.php');
class ajaxLoginModule  {
  private $timeout         = null;
  private $target_element  = null;
  private $wait_text       = null;
  private $form_element    = null;
  private $wait_element    = null;
  private $notify_element  = null;
   
  function __construct() {
     include ('config.php'); 
 $msql  = new Db;
 $msql->connect();
 $this->is_login();
  } 
  function get_config() {
 $this->set_ajax_config();
  } 
  function set_ajax_config() {
     $this->timeout         = AJAX_TIMEOUT;
     $this->target_element  = AJAX_TARGET_ELEMENT;
     $this->wait_text       = AJAX_WAIT_TEXT;
 $this->wait_element    = AJAX_WAIT_ELEMENT;
     $this->notify_element  = AJAX_NOTIFY_ELEMENT;
     $this->form_element    = AJAX_FORM_ELEMENT;
  }
  function initLogin($arg = array()) {
 $this->get_config();
 $this->login_script();     
  }
  function initJquery() { 
 return "<script type='text/javascript' src='files/jquery-1.3.2.min.js'></script>";
  }
  function login_script() { 
 include ('files/login_script.php');
  }
  function is_login() {
      if(isset($_POST['username']))  {
     $username   = $_POST['username'];
 $password   = $_POST['password'];
 $strSQL = "SELECT * FROM ".USERS_TABLE_NAME."
    WHERE username ='$username' AND password = '$password'
   ";
        $result  = mysql_query ($strSQL); 
$row     = mysql_fetch_row($result);
   /*
//THIS IS WHAT I NEED
$_SESSION['user'] = $row['username'];
 $_SESSION['id'] = $row['id'];
*/
$exist   = count($row);
if($exist >=2) { $this->jscript_location();  } 
else { $this->notify_show();}
exit;
  }   
  }
  function notify_show() {
    echo "<script>$('.".AJAX_NOTIFY_ELEMENT."').fadeIn();</script>";
  }
  function jscript_location() {
    $this->set_session();
    echo "<script> $('#container').fadeOut();window.location.href='".SUCCESS_LOGIN_GOTO."'</script>";
  }
  function set_session() {
      session_start();
  $_SESSION['is_successful_login'] = true;

  }    
  
}  
?>  

i comment that line what i need is username and id to store in those session variables

$_SESSION['user'] = $row['username'];
 $_SESSION['id'] = $row['id']

 i tried to add code in  function set_session but did not helped, appreciate  for any help.

Thanks

Is it good practice to put an oop object in session variable

Question about variable variables and using session variables for them. O.K. So if I have:

$foo = 3;
$_SESSION['bar'] = "foo";

$$_SESSION['bar']  should equal the value of $foo, however I can't get it to work. Can someone tell me what I am doing wrong..... is it formatting???

Thanks,
Thomas