php cookie类(经典，值得收藏)

php中文网

发布时间：2016-07-25 08:56:32

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来源于php中文网

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/**
--- create cookie object ---
$c = new cookie();
--- create/update cookie ---
$c->setname('mycookie') // required
->setvalue($value,true) // required - 1st param = data string/array, 2nd param = encrypt (true=yes)
->setexpire('+1 hour') // optional - defaults to "0" or browser close
->setpath('/') // optional - defaults to /
->setdomain('.domain.com') // optional - will try to auto-detect
->setsecure(false) // optional - default false
->sethttponly(false); // optional - default false
$c->createcookie(); // you could chain this too, must be last
--- destroy cookie ---
$c->setname('mycookie')->destroycookie();
or
$c->destroycookie('mycookie');
--- get cookie ---
$cookie = $c->getcookie('mycookie',true); // 1st param = cookie name, 2nd param = whether to decrypt
// if the value is an array, you'll need to unserialize the return
*/
Class Cookie {
// cookie加密键值串，可以根据自己的需要修改
const DES_KEY = 'o89L7234kjW2Wad72SHw22lPZmEbP3dSj7TT10A5Sh60';
private $errors = array();
private $cookieName = null;
private $cookieData = null;
private $cookieKey = null;
private $cookieExpire = 0;
private $cookiePath = '/';
private $cookieDomain = null;
private $cookieSecure = false;
private $cookieHTTPOnly = false;
/**
* 构造函数设置域
* @access public
* @return none
*/
public function __construct()
{
$this->cookieDomain = $this->getRootDomain();
}
/**
* 获取cookie值
* @access public
* @param string $cookieName cookie to be retrieved
* @param bool $decrypt whether to decrypt the values
*/
public function getCookie($cookieName=null, $decrypt=false)
{
if(is_null($cookieName)){
$cookieName = $this->cookieName;
}
if(isset($_COOKIE[$cookieName])){
return ($decrypt?$this->cookieEncryption($_COOKIE[$cookieName],true):base64_decode($_COOKIE[$cookieName]));
} else {
$this->pushError($cookieName.' not found');
return false;
}
}
/**
* 创建cookie
* @access public
* @return bool true/false
*/
public function createCookie()
{
if(is_null($this->cookieName)){
$this->pushError('Cookie name was null');
return false;
}
$ret = setcookie(
$this->cookieName,
$this->cookieData,
$this->cookieExpire,
$this->cookiePath,
$this->cookieDomain,
$this->cookieSecure,
$this->cookieHTTPOnly
);
return $ret;
}
/**
* 清除cookie
* @access public
* @param string $cookieName to kill
* @return bool true/false
*/
public function destroyCookie($cookieName=null)
{
if(is_null($cookieName)){
$cookieName = $this->cookieName;
}
$ret = setcookie(
$cookieName,
null,
(time()-1),
$this->cookiePath,
$this->cookieDomain
);
return $ret;
}
/**
* 设置cookie名称
* @access public
* @param string $name cookie name
* @return mixed obj or bool false
*/
public function setName($name=null)
{
if(!is_null($name)){
$this->cookieName = $name;
return $this;
}
$this->pushError('Cookie name was null');
return false;
}
/**
* 设置cookie值
* @access public
* @param string $value cookie value
* @return bool whether the string was a string
*/
public function setValue($value=null, $encrypt=false)
{
if(!is_null($value)){
if(is_array($value)){
$value = serialize($value);
}
$data = ($encrypt?$this->cookieEncryption($value):base64_encode($value));
$len = (function_exists('mb_strlen')?mb_strlen($data):strlen($data));
if($len>4096){
$this->pushError('Cookie data exceeds 4kb');
return false;
}
$this->cookieData = $data;
unset($data);
return $this;
}
$this->pushError('Cookie value was empty');
return false;
}
/**
* 设置cookie的过期时间
* @access public
* @param string $time +1 week, etc.
* @return bool whether the string was a string
*/
public function setExpire($time=0)
{
$pre = substr($time,0,1);
if(in_array($pre, array('+','-'))){
$this->cookieExpire = strtotime($time);
return $this;
} else {
$this->cookieExpire = 0;
return $this;
}
}
/**
* 设置cookie的保存路径
* @access public
* @param string $path
* @return object $this
*/
public function setPath($path='/')
{
$this->cookiePath = $path;
return $this;
}
/**
* 设置cookie所属的域
* @access public
* @param string $domain
* @return object $this
*/
public function setDomain($domain=null)
{
if(!is_null($domain)){
$this->cookieDomain = $domain;
}
return $this;
}
/**
*
* @access public
* @param bool $secure true/false
* @return object $this
*/
public function setSecure($secure=false)
{
$this->cookieSecure = (bool)$secure;
return $this;
}
/**
* HTTPOnly flag, not yet fully supported by all browsers
* @access public
* @param bool $httponly yes/no
* @return object $this
*/
public function setHTTPOnly($httponly=false)
{
$this->cookieHTTPOnly = (bool)$httponly;
return $this;
}
/**
* Jenky bit to retrieve root domain if not supplied
* @access private
* @return string Le Domain
*/
private function getRootDomain()
{
$host = $_SERVER['HTTP_HOST'];
$parts = explode('.', $host);
if(count($parts)>1){
$tld = array_pop($parts);
$domain = array_pop($parts).'.'.$tld;
} else {
$domain = array_pop($parts);
}
return '.'.$domain;
}
/**
* Value Encryption
* @access private
* @param string $str string to be (de|en)crypted
* @param string $decrypt whether to decrypt or not
* @return string (de|en)crypted string
*/
private function cookieEncryption($str=null, $decrypt=false)
{
if(is_null($str)){
$this->pushError('Cannot encrypt/decrypt null string');
return $str;
}
$iv_size = mcrypt_get_iv_size(MCRYPT_3DES, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$key_size = mcrypt_get_key_size(MCRYPT_3DES, MCRYPT_MODE_ECB);
$key = substr(self::DES_KEY,0,$key_size);
if($decrypt){
$return = mcrypt_decrypt(MCRYPT_3DES, $key, base64_decode($str), MCRYPT_MODE_ECB, $iv);
} else {
$return = base64_encode(mcrypt_encrypt(MCRYPT_3DES, $key, $str, MCRYPT_MODE_ECB, $iv));
}
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return $return;
}
/**
* Add error to errors array
* @access public
* @param string $error
* @return none
*/
private function pushError($error=null)
{
if(!is_null($error)){
$this->errors[] = $error;
}
return;
}
/**
* Retrieve errors
* @access public
* @return string errors
*/
public function getErrors()
{
return implode("
", $this->errors);
}
}