PHP - Session Not Unsetting

I'm teaching myself a bit of OOP in php.  found that i could pass an object into the SESSION array if i serialize() the object and then unserialize() it where i need it in other page files.  all seems to work well until it comes time for a user to logout from my application and attempt to destroy the session.  at times, when they log back in, this serialized SESSION value seems to still be set while other SESSION values have been cleared.  at least i *thinnk* this is what is going on.   in my logout handler, i have the following:

    $_SESSION = array(); // clear all SESSION vars
    setcookie(); // clear cookies
    session_destroy();

but the above does not seem to be working.  my guess is there is something native to serialized SESSION values that im not yet aware of.  any help here would be much appreciated.

HI, I'm having trouble with unsetting a key from SESSION. I can unset the cart, but when I try to target the key, it doesn't work.
    Are there some regular things I should be looking for? The only thing I can think of is that I'm re-initializing the key by accident elsewhere in my code.

if(isset($_POST['mainCartDelete'])){
    
    unset($_SESSION['cart_array'][21]); 
       
    $sessionArray = $_SESSION['cart_array'];     
  
    print_r ($sessionArray);
   
}

Print_r returns

Array ( [0] => Array ( [item_id] => 21 [quantity] => 1 ) ) 

Edited by 7blake, 10 December 2014 - 01:43 PM.

This topic has been moved to Application Frameworks.

http://www.phpfreaks.com/forums/index.php?topic=353397.0

so im developing a WEB GAME etc.... etc.... and im including a page that has functions on it in another page if that makes sense....<br>
so here's my code tell me why i cant get theese array  values to clear?
Code: [Select]
function unlockables(){
// restore the content

$unlockables = array(
'ach'=>array(
// achevements unlockables
md5(0)=>array('key'=>md5(0),'title'=>'novice','cash'=>'1000',  'exp'=>'100000', 'lvl'=>'20'),
md5(1)=>array('key'=>md5(1),'title'=>'rookie','cash'=>'5000',  'exp'=>'150000', 'lvl'=>'40'),
md5(2)=>array('key'=>md5(2),'title'=>'pro','cash'=>'10000', 'exp'=>'250000', 'lvl'=>'60'),
md5(3)=>array('key'=>md5(3),'title'=>'king','cash'=>'50000', 'exp'=>'500000', 'lvl'=>'80'),
md5(4)=>array('key'=>md5(4),'title'=>'Morphelo','cash'=>'100000','exp'=>'1000000','lvl'=>'100'),
),
'levels'=>array(
// lvl up
md5(5)=>array('key'=>md5(5),'price'=>'1000',  'lvlup'=>'1'),
md5(6)=>array('key'=>md5(6),'price'=>'4000',  'lvlup'=>'5'),
md5(7)=>array('key'=>md5(7),'price'=>'7500', 'lvlup'=>'10'),
md5(8)=>array('key'=>md5(8),'price'=>'15000', 'lvlup'=>'25'),
md5(9)=>array('key'=>md5(9),'price'=>'25000', 'lvlup'=>'50')
),
'exp'=>array(
// exp up
md5(10)=>array('key'=>md5(10),'price'=>'100','expup'=>'500'),
md5(11)=>array('key'=>md5(11),'price'=>'1000','expup'=>'6000'),
md5(12)=>array('key'=>md5(12),'price'=>'10000','expup'=>'75000'),
md5(13)=>array('key'=>md5(13),'price'=>'50000','expup'=>'375000'),
md5(14)=>array('key'=>md5(14),'price'=>'100000','expup'=>'750000')
)
);

if($_COOKIE['lvl'] >= 0 && $_COOKIE['lvl'] < 20) {
// first snakes
$status = 'fs';
}elseif($_COOKIE['lvl'] >= 20 && $_COOKIE['lvl'] < 40){
// Novice
$status = 'novice';
}elseif($_COOKIE['lvl'] >= 40 && $_COOKIE['lvl'] < 60){
// Rookie
$status = 'rook';
}elseif($_COOKIE['lvl'] >= 60 && $_COOKIE['lvl'] < 80){
// pro
$status = 'pro';
}elseif($_COOKIE['lvl'] >= 80 && $_COOKIE['lvl'] < 100){
// Novice
$status = 'king';
}elseif($_COOKIE['lvl'] >= 100){
// Novice
$status = 'morphelo';
}
 
switch($status){
case 'novice':
unset(
$unlockables['ach'][md5(0)],
$unlockables['ach'][md5(2)],
$unlockables['ach'][md5(3)],
$unlockables['ach'][md5(4)]
);
break;
case 'rook':
unset(
$unlockables['ach'][md5(0)],
$unlockables['ach'][md5(1)],
$unlockables['ach'][md5(3)],
$unlockables['ach'][md5(4)]
);
break;
case 'pro':
unset(
$unlockables['ach'][md5(0)],
$unlockables['ach'][md5(1)],
$unlockables['ach'][md5(2)],
$unlockables['ach'][md5(4)]
);
break;
case 'king':
unset(
$unlockables['ach'][md5(0)],
$unlockables['ach'][md5(1)],
$unlockables['ach'][md5(2)],
$unlockables['ach'][md5(3)]
);
break;
case 'morphelo':
unset($unlockables['ach']);
break;
}
// here is were im trying print to screen but the array is still printing full
print_r($unlockables['ach']);
}

Driving myself nuts...can't figure out what is wrong with this code.  This is part of a pagination system that uses an array instead of hitting the db each time.  I am using CodeLobster PHP version (3.7), Windows 7, and using a virtual server on my computer for development (XAMPP)

the error I get is this:
Warning:  Invalid argument supplied for foreach() in C:\xampp\htdocs\website\searchinv.php on line 45

Warning:  array_multisort() function.array-multisort: Argument #1 is expected to be an array or a sort flag in C:\xampp\htdocs\website\searchinv.php on line 49

Warning:  array_slice() expects parameter 1 to be array, boolean given in C:\xampp\htdocs\website\searchinv.php on line 108
 
Warning:  Invalid argument supplied for foreach() in C:\xampp\htdocs\website\searchinv.php on line 146


I am pasting the code below and point out each of the lines in the warnings above, and will try to clean up some so that it's not too extensive...

Here is the problem:  If I click on any of the "page" $_SESSION['rows'] has all the correct information contained in it.  However, if I trigger the "re-sort" select option...$_SESSION['rows'] is empty...all my other $_SESSION variables are still there.  At first I thought it was an issue with too many "if/ifelse/else" statements or a wrong syntax...so I changed it to a "switch" and traced it closely.  I don't see anything wrong.  Next I thought it was caused by the JavaScript "onchange" event...so I took that out...and replaced it with just a submit button...same result.  I've done a search on the page for EVERY $_SESSION['rows'] and found only 4 and none of them should blank it out...I've been going crazy on this code for 2 days I'm pulling my hair out now...can ANYONE help?
Code: [Select]
  if(!empty($_POST))
    {
  if(empty($_POST['page']))
    {
  switch($_POST)
    {
  case (!empty($_POST['ref'])):
    $deleted=sql_ending($_POST['del']);
    $rows=select_from_database('inventory', '*', 'ref_number=\''.$_POST['ref'].'\' and '.$deleted);
    break;
  case (!empty($_POST['type'])):
    $sort=$_POST['sort'];
    $deleted=sql_ending($_POST['del']);
if($_POST['type']!='*')
                      {
                  $type=$_POST['type'];
                $len=strlen(trim($type));
            if($len!=1)
              $type=$type.'-'; 
                  $end=$deleted.' and ref_number like \''.$type.'%\'';
                      }
else
    $end=$deleted;
                    $rows=select_from_database('inventory', '*', $end, $sort);
break;
  default:
            $data=$_SESSION['rows'];
    $sorts=explode(' ', $_POST['sort']);
    $keys=$sorts[0];
    $order=$sorts[1];
Line 45 -->           foreach ($data as $key => $row)
      {
                                $column[$key]=$row[$keys];
                               }
Line 49 -->           $rows=array_multisort($column, $order, $data);
    break;
    }  
                  $_SESSION['rows']=$rows;
    }
  $x=count($_SESSION['rows']);
  if(isset($_SESSION['admin_user']))
      $width=1280;
  else
      $width=900;
  $srch_rslt= '            <div id="displaybox">
              <div id="translucent"></div>
              <div id="result" style="width:'.$width.'px;">
              <!--[if lt IE 7]>
                <h3 class="center">This site looks much better with IE 7 and above.&nbsp; Please consider upgrading <a href="browsers.php">HERE</a>.</h3>
              <![endif]-->
';
  if($x==0)
      $srch_rslt.='                <h3>Search Result</h3>
                <a style="display: block; margin-right:10px;" href="searchinv.php" title="Close this box.">Close&nbsp;<img src="images/close.png" alt="Close this box." /></a>
                <p>We are sorry, but we currently do not have the equipment available for the given search.&nbsp; Please go back and <a href="searchinv.php" title="Search Again">search again</a>, or <a href="mailto:mywebsite@mywebsite.com" title="Send us an email so we can locate the equipment you need." onclick="popup(\'email.php?title=pray\', \'Request for Equipment\', 500, 500); return false">contact us</a> so we may begin to utilze are vast resources to locate your needs.
              </div>
             </div>
';
      else
    {
  if(empty($_POST['page']))
      $pg=1;
  else
      $pg=$_POST['page'];
      $page=($pg-1)*20;
      $_SESSION['pages']=ceil($x/20);
  if(!$_SESSION['pages']>1)
      $buttons='<button type="button" class="active" title="Page 1">1</button>
';
  elseif($pg>1)
    {
  $prev_pg=$pg-1;
      $buttons='<button type="submit" class="button" title="First" value="1" name="page">&lt;&lt; First</button>
                              <button type="submit" class="button" title="Previous" value="'.$prev_pg.'" name="page">&lt; Prev</button>
';
}
  for($i=1; $i<=$_SESSION['pages']; $i++)
    {
  if($i==$pg)
      $buttons.='                              <button type="button" class="active" title="Page '.$pg.'">'.$pg.'</button>
';
  else  
      $buttons.='                              <button type="submit" class="button" title="Page '.$i.'" value="'.$i.'" name="page">'.$i.'</button>
';
}
  if($pg<$_SESSION['pages'])
    {
  $next_pg=$pg+1;
      $buttons.='                              <button type="submit" class="button" title="Next" value="'.$next_pg.'" name="page">Next &gt;</button>
                              <button type="submit" class="button" title="Last" value="'.$_SESSION['pages'].'" name="page">Last &gt;&gt;</button>
';
}

Line 108 -->  $results=array_slice($_SESSION['rows'], $page, 20, true);
      $srch_rslt.='                <h3>Search Complete!</h3>
                <a class="close" href="searchinv.php" title="Close this box.">Close&nbsp;<img style="border:none;" src="images/close.png" alt="Close this box." /></a>
                <p>You may now browse, re-sort and download your results in either PDF or an Excel format.</p>
';

        if (isset($_SESSION['admin_user']))
    $table = 1260;
else
    $table = 880;
$tableinner = $table-20;
      $srch_rslt.='                <form name="search_page" method="post" action="searchinv.php?search='.$_POST['search'].'">
                  <div style="border:2px solid #00000; width:'.$table.'px;">
 
           /* there's a table here */
';
          $y=0;
Line 146 --> foreach($results as $result)
            {
              $y++;  
  $cl_type=explode('-', $result['ref_number']);
  $type=select_from_database('car_types', '*', 'abbvr=\''.$cl_type[0].'\'');
  $raw_notes=$result['notes'];
                  if ($raw_notes == NULL)
              $notes="Call for additional information.";
                  elseif (strlen($raw_notes) >65)
            {
              $txtlth=strpos($raw_notes, " ", 65);
      $notes=substr($raw_notes, 0, $txtlth).'<span id="para'.$pg.$y.'" class="jshide"> '.substr($raw_notes, $txtlth).'</span><a class="jsunhide" href="javascript:function(){};" onclick="toggleMe(\'para'.$pg.$y.'\', \'href'.$pg.$y.'\')" id="href'.$pg.$y.'" style="text-decoration: none">...[click for more]</a>';
        }
  else
      $notes=$raw_notes;

          $srch_rslt.='  /*just some html output stuff */

      $srch_rslt.='                            </table>
                          </div>
                          <div>
                            <input type="hidden" name="search" value="'.$_POST['search'].'" />
                            <p class="center">
                              '.$buttons.'                            </p>
                          </div>
                        </td>
                      </tr>
                    </table>
                  </div>
                </form>
                <div class="search_menu_wrapper">
                  <ul class="sermenu">
                    <li>Need to search again?&nbsp; Back to the <a href="searchinv.php" title="Do another search.">search page</a>.</li>
                    <li>Download this search to a <a href="http://www.mywebsitedowloadpdf.php?search='.$_POST['search'].'" title="Download to .pdf.">.pdf&nbsp;<img src="images/adobe.png" style="width:15px; height:15px; border:none;" alt="Download in Adobe PDF format." /></a></li>
                    <li>Download this search to a <a href="http://www.mywebsitedowloadexcel.php?search='.$_POST['search'].'" title="Download to MS Excel.">MS Excel&nbsp;<img src="images/excel.png" style="width:15px; height:15px; border:none;" alt="Download in MS Excel format." /></a></li>
                  </ul>
                </div>
Like I said if I click a "page" button (stored in the $buttons var and printed above)...the code works beautifully...it's when the next lines (below) are triggered that cause $_SESSION['rows'] to be empty...I just don't get it

Code: [Select]
                <div style="text-align:center;">
                  <form name="re_sort" method="post" action="searchinv.php?search='.$_POST['search'].'">
                  <label class="form-label-left" id="l_sort" for="sort">Re-Sort By:</label>
                  <div class="form-input">
                    <select class="form-dropdown" style="width:190px" id="sort" name="sort" onchange="this.form.submit();">
                      <option value="ref_number SORT_ASC" selected="selected"> Reference Number - Ascending </option>
                      <option value="ref_number SORT_DESC"> Reference Number - Descending </option>
                      <option value="date_added SORT_ASC"> Date Added - Ascending </option>
                      <option value="date_added SORT_DESC"> Date Added - Descending </option>
                      <option value="last_update SORT_ASC"> Date Updated - Ascending </option>
                      <option value="last_update SORT_DESC"> Date Updated - Descending </option>
';
if($_SESSION['admin'] == 10)
    $srch_rslt.='                      <option value="source SORT_ASC"> Source - Ascending </option>
                      <option value="source SORT_DESC"> Source - Descending </option>
';
    $srch_rslt.='                    </select><button type="submit" value="submit">Submit</button>
                  </div>
                  </form>
                </div>
              </div>
            </div>
            <script type="text/javascript" language="javascript">
              //<![CDATA[
                document.body.style.overflow="hidden";
              //]]>
            </script>
';
        }
  }
  echo $srch_rslt;