PHP - Serialized Session Not Clearing/unsetting

What is the point of serializing an array and can some show me an example as to when it should be used?

Ok...working with serialized data is not fun.  This is how WordPress does it.  I had something working a little, but it wasn't getting all the information I needed.  The query below appears to retrieve all the information I need.

What I'm trying to do is determine what type of Subscription (s2member_level) a User gets and where they live (county).  I eventually want to show the total number of each group, as well as the Usernames (only 18 total right now).

The below code SHOULD look like this:

Region 1:  ## members
Region 2:  ## members
Region 3:  ## members
Region 4:  ## members
Region 5:  ## members



But...right now it just shows

Region   :  18 members    (no number after the region)


Code: [Select]
$custom = 'SELECT * FROM wp_usermeta um1
INNER JOIN wp_usermeta um2
JOIN wp_users u
ON um1.user_id=um2.user_id
WHERE um1.meta_key = "wp_s2member_custom_fields" AND um2.meta_value LIKE "%s2member_level%"
AND um1.user_id = u.ID
GROUP BY um1.user_id';

$c_results = mysql_query($custom);

$region = array();

while($line = mysql_fetch_assoc($c_results)) {

$meta_value = unserialize($line['um1.meta_value']);

$region[$meta_value['county']]++;


};

foreach ($region as $key => $value) {

echo "Region $key: $value members<br>";
}



This is just a sample of the data retrieved for four Users.  I used the Inner Join through help on here.  Each row shows two entries from the same table.  The code above appears to be counting the valid results properly, but it's not dividing them up.  So it appears to work down to the "foreach" part.

Quote

umeta_id   user_id   meta_key   meta_value   umeta_id   user_id   meta_key   meta_value
15624   1073   wp_s2member_custom_fields   a:1:{s:6:"county";s:1:"1";}   15617   1073   wp_capabilities   a:1:{s:15:"s2member_level2";s:1:"1";}
16041   1094   wp_s2member_custom_fields   a:1:{s:6:"county";s:1:"3";}   16034   1094   wp_capabilities   a:1:{s:15:"s2member_level2";s:1:"1";}
16491   1117   wp_s2member_custom_fields   a:1:{s:6:"county";s:1:"2";}   16484   1117   wp_capabilities   a:1:{s:15:"s2member_level2";s:1:"1";}
16671   1126   wp_s2member_custom_fields   a:1:{s:6:"county";s:1:"3";}   16664   1126   wp_capabilities   a:1:{s:15:"s2member_level2";s:1:"1";}

Hey all, I'm am stumped. I'm working with someone else's code and I find they are using serialized arrays a lot. unfortunately at present I am not to familiar with serialized arrays and how to work with them and Ive been searching for an answer for a bit but I am not doing so hot in my quest, so I thought I'd come here and give it a crack.

From what I gather the person that did this portion of the site I am working on pulled this as is from linkedin. From it I am trying to reconstruct it for the page I am putting into, this information is stored in hundreds of db entries so I cant really redo everything.

Is there a direct way of working with this or do I have to covert it to an array or what is the best way to handle data like below, or serialized arrays in general for that matter.

Example of what I am looking at:
Code: [Select]
{"@attributes":{"total":"1"},"position":{"id":"155477330","title":"Lead Architect","summary":{},"start-date":{"year":"2010","month":"10"},"is-current":"true","company":{"id":"209012","name":"Sprint Mobile Inc","type":"Privately Held","industry":"Internet"}}}
And another example:
Code: [Select]
{"@attributes":{"total":"3"},"position":[{"id":"161998487","title":"Senior UX\/UI Designer","summary":"Plan, Design, and Direct User Experience Design\/Development. Also in charge of sharing and spreading the UX philosophy company-wide.","start-date":{"year":"2011","month":"1"},"is-current":"true","company":{"id":"209012","name":"UpMo","type":"Privately Held","industry":"Internet"}},{"id":"149276847","title":"Owner \/ Creative Director","summary":"I'm 27 years old and born and raised in Charleston, South Carolina. \n\nAs a web designer and developer with nearly 14 years of experience, I've always found myself to be interested in business development. I started my first web business when I was 17 years old and watched it grow from a one man operation in a bedroom, to twelve employees working from two office locations. \n\nOver the years I have developed over 200 websites and assisted in the design\/development in as many more.\n\nBeing an entrepreneur, I've developed a sixth sense for quality assurance on web projects -- in other words, if I cannot give it a thumbs up for my own business, why would I give it to you?","start-date":{"year":"2010","month":"6"},"is-current":"true","company":{"id":"1487228","name":"Brandon Rivers Consulting, LLC.","industry":"Internet"}},{"id":"71905623","title":"Chairman \/ Chief Executive Officer","summary":"Brandon is responsible for setting strategy and overseeing the day-to-day business and operations of Campus Rhythm.\n\nIn this position, Brandon\u2019s core responsibility is not only facilitating business outside of Campus Rhythm, but balancing internal and external initiatives to build a sustainable corporation. \n\nCampus Rhythm is the FIRST and ONLY fully automated Student to Student textbook network that allows students all over the country to set their own prices, and be connected to other students to buy and sell textbooks.","start-date":{"year":"2007","month":"10"},"is-current":"true","company":{"name":"Campus Rhythm, LLC.","industry":"Internet"}}]}

I'm dealing with data that WordPress creates for Users when they register and subscribe, and to use it for other purposes, I have to wrap my head around serialized data.  It's not sinking in well.  The below code works well for what I wanted at the time. 

It takes into consideration where the Subscriber lives (divided up into five areas) and counts how many I have.  That is noted by wp_s2member_custom_fields and ANY s2member_level.  There are three levels, and I need to actually note how many there are at each Member level. 

There is another line of data for each user_id
meta_key = wp_capabilities
meta_value = a:1:{s:15:"s2member_level2";s:1:"1";}


Code: [Select]

$custom = 'SELECT * FROM wp_usermeta WHERE meta_key = "wp_s2member_custom_fields" AND user_id IN (SELECT user_id FROM wp_usermeta WHERE meta_value LIKE "%s2member_level%")';
$c_results = mysql_query($custom);

$region = array();

while($line = mysql_fetch_assoc($c_results)) {

$meta_value = unserialize($line['meta_value']);

$region[$meta_value['county']]++;
};

foreach ($region as $key => $value) {

echo "Region $key: $value members<br>";
}

I had been escaping my arguments before passing to exec(), and then type casting back on the other end.  Recently needed to pass an array, and at first planned on json_encode(), but gave serialize/unserialize a try and discovered that it automatically took care of the type casting.  The data is coming from me thus I am not (hopefully!) worried about malicious data.  Any need to also use escapeshellarg() either before or after serializing?  Thanks

I am using session variables to keep track of what is in a shopping cart. I can add the items to the cart quite easily enough. But my problem is that I can't delete a specific item in the cart. Below is a summary of what the array looks like

$Item1=array("ProdID"=>"Hat","Color"=>"Not Needed","Size"=>5);
$Item4=array("ProdID"=>"Shirt","Color"=>"Green","Size"=>"L");
$Item2=array("ProdID"=>"Pants","Color"=>"Not Needed","Size"=>"32x32");
$Item3=array("ProdID"=>"Socks","Color"=>"Not Needed","Size"=>"Not Needed");
$NumItems=4;
$TestArray=array("NumItems"=>$NumItems,1=>$Item1,2=>$Item2,3=>$Item3,4=>$Item4);

However when I attempt to delete any of the top level elements (1,2,3,4,NumItems), I either end up deleting only the last element (4) or somehow taking out 2 of them. I know that this must be an easy fix but I've looked at it for so long that I can't seem to figure out what the problem is.
below is the code that I use to delete the Item from the array
Code: [Select]
$ItemNum=$_GET['item'];
if ($ItemNum=="All"){
$ItemNum=$_GET['item'];
if ($ItemNum=="All"){
unset($TestArray);
unset($TestArray['NumItems']);
unset($_SESSION['OrderTotal']);
//header("Location:Cart.php?act=view");
}
else{
$TestArray['NumItems']=$TestArray['NumItems']-1;
if($TestArray['NumItems']<1)
{
unset($_SESSION['OrderTotal']);
unset($TestArray);
unset($TestArray['NumItems']);
}
else
{
unset($TestArray[$ItemNum]);
}


Can anyone take a look at this and point me in the correct direction? What I am after is to delete any element of the top array and keep the rest.

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;

This topic has been moved to MySQL Help.

http://www.phpfreaks.com/forums/index.php?topic=351561.0

I am having trouble resolving an error.

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/s519970/public_html/header.php:27) in /home/s519970/public_html/admin/login.php on line 2

 What I can gather is I can't use "header (Location: 'admin.php')" after i've used session_start(). I have tried to replace the header (Location: 'admin.php') with this:

                echo "<script>document.location.href='admin.php'</script>";
      echo "<script>'Content-type: application/octet-stream'</script>";

I've been trying to read up on solutions but haven't been able to get it sorted. If anyone can offer some advice that would be greatly appreciated as im new to php.

Code: [Select]
<?php
  session_start();
  if(isset($_SESSION['user']))

                echo "<script>document.location.href='admin.php'</script>";
echo "<script>'Content-type: application/octet-stream'</script>";
?>

<div id="loginform">

<form action="dologin.php" method="post">
<table>
<tr>
<td><span>Username:</span></td>
<td><input type="text" name="username" /></td>
</tr>
<tr>
<td><span>Password:</span></td>
<td><input type="password" name="password" /></td>
</tr>
<tr>
<td colspan="2" align="right"><input type="submit" name="login" value="Login" /></td>
</tr>
</table>
</form>

</div>
I have tried using require_once('yourpage.php'); before my <head></head> tags in the header document where I've specified the html information but this doesn't seem to work. I've been advised to use ob_start("ob_gzhandler"); but I am not sure how to implement this.

Any advice is greatly appreciated!

I am trying to create an index page which contains registration and login field
the problem that i get is on successful login a warning is displayed
session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\xampp\htdocs\Eventz.com\index.php:116) in C:\xampp\htdocs\Eventz.com\index.php on line 235

This is the login part of my index.php
this tag is inside an html table below the login form
I also have a registration form and its php code above the login form


Code: [Select]
<?php
if (isset($_REQUEST['pass']))
{
    $id=$_POST['id'];
    $pass=$_POST['pass'];

    $conn =mysql_connect("localhost","root","");
    if (!$conn)
    {
   die('Could not connect: ' . mysql_error());
    }
/*
checking connection....success!
*/
    $e=mysql_select_db('test', $conn);
    if(!$e)
    {
   die(''.mysql_error());
    }
    else
    {
   echo 'database selected successfully';
    }

    if (isset($_REQUEST['id'])  || (isset($_REQUEST['pass'])))
    {
        if($_REQUEST['id'] == "" || $_REQUEST['pass']=="")
        {
       echo "login fields cannot be empty";
        }
        else
        {
            $sql=mysql_query("Select email,password from login where email='$id' AND password='$pass'");
            $count=mysql_num_rows($sql);
            if($count==1) 

    /* $count checks if username and password are in same row */
            {   
                session_start();
                $_SESSION['id']=$id;
                echo "</br>Login Successful</br>";
            }
            else
            {
           echo "</br>invalid</br>";
           echo "please try to login again</br>";

            }
        
        }   
    }
}
?>


Any help or suggestion would be appreciated

in this page
 http://maximaart.com/newscp/
i have this problem
Code: [Select]
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/maximasy/public_html/newscp/index.php:1) in /home/maximasy/public_html/newscp/index.php on line 2

my source code is

<?php
session_start();
include_once("config.php"); 
include_once("functions.php");
$errorMessage = '';
if (isset($_POST['txtUserId']) && isset($_POST['txtPassword'])) {
if ($_POST['txtUserId'] === "$user" && $_POST['txtPassword'] === "$pass") {
// the user id and password match,
$_SESSION['basic_is_logged_in'] = true;
require("main.php");
exit;?>

I am currently building a website which uses postbacks.
How can I clear the postback so that it can only be posted once because at the minute when i refresh the page it keeps adding the same entry.
Any help would be appreciated

How do you clear GET variables after performing the action in the same page?
I have tried to unset() them, but every time I refresh, the script reruns all over again and in the end, I have duplicate entries.

I have a Credit Card Payment Form.

A few things...

1.) For non-financial fields, I'm using a "sticky form".

Code: [Select]
<label for="firstName">First Name:</label>
<input id="firstName" name="firstName" class="text" type="text"
maxlength="20" value="<?php echo $firstName; ?>" />

After the user successfully submits the form, how can I erase these values out?

Right now, if you hit the "Back" button, the form data is still there, which isn't very secure?!


2.)  I read somewhere, that HTML secretly cache form values, and there is something you add to your HTML to prevent these - especially on the Credit Card # field.

Any idea what I'm talking about?

BTW, I'm not using Cookies, Sessions, or a DB to store any form data.

Thanks,



Debbie