采于www.phpbuilder.com,稍作补充。代码如下。嘻嘻：）
basket.php:
<?php
include ("evert.inc");
?>
<PRE>
ID    Name    Price
1     Mouse   25.00 <A HREF="<?echo $PHP_SELF; ?>?act=add&id=1&price=25&basket=Mouse">add</A>  <A HREF="<?echo $PHP_SELF; ?>?act=subtract&id=1&price=25&basket=Mouse">subtract</A>
2     Key    100.00 <A HREF="<?echo $PHP_SELF; ?>?act=add&id=2&price=100&basket=Key">add</A>  <A HREF="<?echo $PHP_SELF; ?>?act=subtract&id=2&price=100&basket=Key">subtract</A>
3     Car   5000.00 <A HREF="<?echo $PHP_SELF; ?>?act=add&id=3&price=5000&basket=Car">add</A>  <A HREF="<?echo $PHP_SELF; ?>?act=subtract&id=3&price=5000&basket=Car">subtract</A>
4     Game    25.00 <A HREF="<?echo $PHP_SELF; ?>?act=add&id=4&price=25&basket=Game">add</A>  <A HREF="<?echo $PHP_SELF; ?>?act=subtract&id=4&price=25&basket=Game">subtract</A>
</PRE>
<a href="<?echo $PHP_SELF;?>?logout=1">Logout</a>


evert.inc:
<?php
session_start();
if($logout){
session_destroy();
unset($ses_basket_name);
unset($ses_basket_amount);
unset($ses_basket_price);
unset($ses_basket_id);
unset($ses_basket_items);
}
if ($basket!=""){
                if (session_is_registered("ses_basket_items")){
                $basket_position_counter=0;
                $double=0;

                if ($ses_basket_items>0){
                   foreach ($ses_basket_name as $basket_item){
                      if ($basket_item==$basket){
                         $double=1;
                         $basket_position=$basket_position_counter;

                      }
                      $basket_position_counter++;
                   }
                }
              if ($double==1){
                $oldamount=$ses_basket_amount[$basket_position];