php类用于处理cookie

<?php
    // cookieClass
    // Copyright (C) 2005 JRSofty Programming.
    // http://jrsofty1.stinkbugonline.com
    // Licensed under GNU/GPL 

    class cookieClass{

        var $cName = '';
        var $cTime = '';
        var $cSerialize = false;        
        var $cPath = '';

        function cookieClass($cookieName, $cookieTimeout, $cookieSerialize = false, $cookiePath = "/"){
            $this->cName = $cookieName;
            $this->cTime = $cookieTimeout;
            $this->cSerialize = $cookieSerialize;
            $this->cPath = $cookiePath;
            // This should fix the issue if you have cookies set and THEN turn on the serialization.
            $iname = $this->cName . "_S";
            if($this->cSerialize && !isset($_COOKIE[$iname])){
                $cookArr = array();
                foreach($_COOKIE as $name=>$val){
                    if(strpos($name,$this->cName) !== false ){ // make sure it is a cookie set by this application
                        $subname = substr($name,strlen($this->cName) + 1);
                        $cookArr[$subname] = $val;
                        $this->KillCookie($name);
                    }
                }
                $this->WriteCookie($cookArr);
            }
            // This is the opposite from above. changes a serialized cookie to multiple cookies without loss of data
            if(!$this->cSerialize && isset($_COOKIE[$iname])){
                $cookArr = unserialize($_COOKIE[$iname]);
                $this->KillCookie($iname);
                $this->WriteCookie($cookArr);
            }

        }

        function DestroyAllCookies(){
            foreach($_COOKIE as $name=>$val){
                if(strpos($name,$this->cName) !== false){
                    $_COOKIE[$name] = NULL;
                    $this->KillCookie($name);
                }
            }
        }

        function ReadCookie($item){
            if($this->cSerialize){
                $name = $this->cName . "_S";
                if(isset($_COOKIE[$name])){
                    // handle the cookie as a serialzied variable
                    $sCookie = unserialize($_COOKIE[$name]);
                    if(isset($sCookie[$item])){
                        return $sCookie[$item];
                    }else{
                        return NULL;
                    }
                }else{
                    return NULL;
                }
            }else{
                $name = $this->cName . "_" . $item;
                if(isset($_COOKIE[$name])){
                    // handle the item as separate cookies
                    return $_COOKIE[$name];
                }else{
                    return NULL;
                }
            }   
        }

        function KillCookie($cName){
            $tStamp = time() - 432000;
            setcookie($cName,"",$tStamp,$this->cPath);
        }

        function WriteCookie($itemArr){
            if($this->cSerialize){                  
                $sItems = serialize($itemArr);
                $name = $this->cName . "_S";
                $_COOKIE[$name] = $sItems;
                $tStamp = time() + $this->cTime;
                setcookie($name,$sItems,$tStamp,$this->cPath);
            }else{
                $tStamp = time() + $this->cTime;
                foreach($itemArr as $nam=>$val){
                    $name = $this->cName . "_" . $nam;
                    $_COOKIE[$name] = $val;
                    setcookie($name,$val,$tStamp,$this->cPath);
                }e
            }
        }

    }
?>

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