Add cart item in session aaray and delete one session variable from session key

1. you have to add item in session array.

code-:

$_SESSION['challan'][] =$challan_nmber;

here $_SESSION['challan'][] is session and session_nmbr is value;

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2. fetch_the_whole session_data

                foreach ($_SESSION['challan'] as $key=>$value)

{

echo '<b>_'.$value.'</b>';

}

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3. unset one variable

                      $key=array_search($challan_nmber,$_SESSION['challan']);

unset($_SESSION['challan'][$key]);

here $key will search challan_nmber and will match with $_SESSION['challan']); if found it will unset.

------------------------------------ *** Whole code ***  -------------------------------------------------

if(isset($_POST['add_to_bill']))

{

session_start();

$company_code=strip_tags($_POST['add_to_bill']);

$challan_nmber=strip_tags($_POST['challan_nmbr']);

$responce_code=strip_tags($_POST['responce_code']);

if($responce_code==1)

{

$query1=mysql_query("update table_name set status=4 where bill_number='$challan_nmber'");

$_SESSION['challan'][] =$challan_nmber;

$msg='this challan added to bill_bakset';

}

if($responce_code==0)

{

$query1=mysql_query("update table_name set status=3 where bill_number='$challan_nmber' and status=4");

$key=array_search($challan_nmber,$_SESSION['challan']);

unset($_SESSION['challan'][$key]);

$msg='this challan has been removed form bill_bakset';

}

if($query1)

{

//echo $msg;

foreach ($_SESSION['challan'] as $key=>$value)

{

//echo "<h2>".$value."</h2>";

echo '^_'.$value.'';

}

}

else

{

echo '<i style="color:red">'.mysql_error().'</i>';

}

}