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php实现的Cookies操作类实例,phpcookies类实例
php中cookies怎设置多个值跟asp一样可以设置多个值
PHP怎读取COOKIES
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php实现的Cookies操作类实例,phpcookies类实例

Jun 13, 2016 am 09:24 AM
cookies php

php实现的Cookies操作类实例,phpcookies类实例

本文实例讲述了PHP实现的Cookies操作类及其用法,分享给大家供大家参考。具体分析如下:

一、功能:

1.保存,读取,更新,清除cookies数据。
2.可设置前缀。
3.强制超时控制。
4.cookies数据可以是字符串,数组,对象等。

二、用法:

Cookies.class.php类文件如下:

<&#63;php 
/** Cookies class 保存,读取,更新,清除cookies数据。可设置前缀。强制超时。数据可以是字符串,数组,对象等。 
*  Date:  2013-12-22 
*  Author: fdipzone 
*  Ver:  1.0 
* 
*  Func: 
*  public  set    设置cookie 
*  public  get    读取cookie 
*  public  update   更新cookie 
*  public  clear   清除cookie 
*  public  setPrefix 设置前缀 
*  public  setExpire 设置过期时间 
*  private authcode  加密/解密 
*  private pack    将数据打包 
*  private unpack   将数据解包 
*  private getName  获取cookie name,增加prefix处理 
*/ 
 
class Cookies{ // class start 
 
  private $_prefix = '';                         // cookie prefix 
  private $_securekey = 'ekOt4_Ut0f3XE-fJcpBvRFrg506jpcuJeixezgPNyALm';  // encrypt key 
  private $_expire = 3600;                        // default expire 
 
  /** 初始化 
  * @param String $prefix   cookie prefix 
  * @param int  $expire   过期时间 
  * @param String $securekey cookie secure key 
  */ 
  public function __construct($prefix='', $expire=0, $securekey=''){ 
 
    if(is_string($prefix) && $prefix!=''){ 
      $this->_prefix = $prefix; 
    } 
 
    if(is_numeric($expire) && $expire>0){ 
      $this->_expire = $expire; 
    } 
 
    if(is_string($securekey) && $securekey!=''){ 
      $this->_securekey = $securekey; 
    } 
 
  } 
 
  /** 设置cookie 
  * @param String $name  cookie name 
  * @param mixed $value cookie value 可以是字符串,数组,对象等 
  * @param int  $expire 过期时间 
  */ 
  public function set($name, $value, $expire=0){ 
 
    $cookie_name = $this->getName($name); 
    $cookie_expire = time() + ($expire&#63; $expire : $this->_expire); 
    $cookie_value = $this->pack($value, $cookie_expire); 
    $cookie_value = $this->authcode($cookie_value, 'ENCODE', $this->_securekey); 
 
    if($cookie_name && $cookie_value && $cookie_expire){ 
      setcookie($cookie_name, $cookie_value, $cookie_expire); 
    } 
 
  } 
 
  /** 读取cookie 
  * @param String $name  cookie name 
  * @return mixed     cookie value 
  */ 
  public function get($name){ 
 
    $cookie_name = $this->getName($name); 
 
    if(isset($_COOKIE[$cookie_name])){ 
 
      $cookie_value = $this->authcode($_COOKIE[$cookie_name], 'DECODE', $this->_securekey); 
      $cookie_value = $this->unpack($cookie_value); 
 
      return isset($cookie_value[0])&#63; $cookie_value[0] : null; 
 
    }else{ 
      return null; 
    } 
 
  } 
 
  /** 更新cookie,只更新内容,如需要更新过期时间请使用set方法 
  * @param String $name  cookie name 
  * @param mixed $value cookie value 
  * @return boolean 
  */ 
  public function update($name, $value){ 
 
    $cookie_name = $this->getName($name); 
 
    if(isset($_COOKIE[$cookie_name])){ 
 
      $old_cookie_value = $this->authcode($_COOKIE[$cookie_name], 'DECODE', $this->_securekey); 
      $old_cookie_value = $this->unpack($old_cookie_value); 
 
      if(isset($old_cookie_value[1]) && $old_cookie_vlaue[1]>0){ // 获取之前的过期时间 
 
        $cookie_expire = $old_cookie_value[1]; 
 
        // 更新数据 
        $cookie_value = $this->pack($value, $cookie_expire); 
        $cookie_value = $this->authcode($cookie_value, 'ENCODE', $this->_securekey); 
 
        if($cookie_name && $cookie_value && $cookie_expire){ 
          setcookie($cookie_name, $cookie_value, $cookie_expire); 
          return true; 
        } 
      } 
    } 
    return false; 
  } 
 
  /** 清除cookie 
  * @param String $name  cookie name 
  */ 
  public function clear($name){ 
 
    $cookie_name = $this->getName($name); 
    setcookie($cookie_name); 
  } 
 
  /** 设置前缀 
  * @param String $prefix cookie prefix 
  */ 
  public function setPrefix($prefix){ 
 
    if(is_string($prefix) && $prefix!=''){ 
      $this->_prefix = $prefix; 
    } 
  } 
 
  /** 设置过期时间 
  * @param int $expire cookie expire 
  */ 
  public function setExpire($expire){ 
 
    if(is_numeric($expire) && $expire>0){ 
      $this->_expire = $expire; 
    } 
  } 
 
  /** 获取cookie name 
  * @param String $name 
  * @return String 
  */ 
  private function getName($name){ 
    return $this->_prefix&#63; $this->_prefix.'_'.$name : $name; 
  } 
 
  /** pack 
  * @param Mixed $data   数据 
  * @param int  $expire  过期时间 用于判断 
  * @return 
  */ 
  private function pack($data, $expire){ 
 
    if($data===''){ 
      return ''; 
    } 
 
    $cookie_data = array(); 
    $cookie_data['value'] = $data; 
    $cookie_data['expire'] = $expire; 
    return json_encode($cookie_data); 
  } 
 
  /** unpack 
  * @param Mixed $data 数据 
  * @return       array(数据,过期时间) 
  */ 
  private function unpack($data){ 
 
    if($data===''){ 
      return array('', 0); 
    } 
 
    $cookie_data = json_decode($data, true); 
 
    if(isset($cookie_data['value']) && isset($cookie_data['expire'])){ 
 
      if(time()<$cookie_data['expire']){ // 未过期 
        return array($cookie_data['value'], $cookie_data['expire']); 
      } 
    } 
    return array('', 0); 
  } 
 
  /** 加密/解密数据 
  * @param String $str    原文或密文 
  * @param String $operation ENCODE or DECODE 
  * @return String      根据设置返回明文活密文 
  */ 
  private function authcode($string, $operation = 'DECODE'){ 
 
    $ckey_length = 4;  // 随机密钥长度 取值 0-32; 
 
    $key = $this->_securekey; 
 
    $key = md5($key); 
    $keya = md5(substr($key, 0, 16)); 
    $keyb = md5(substr($key, 16, 16)); 
    $keyc = $ckey_length &#63; ($operation == 'DECODE' &#63; substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
 
    $cryptkey = $keya.md5($keya.$keyc); 
    $key_length = strlen($cryptkey); 
 
    $string = $operation == 'DECODE' &#63; base64_decode(substr($string, $ckey_length)) : sprintf('%010d', 0).substr(md5($string.$keyb), 0, 16).$string; 
    $string_length = strlen($string); 
 
    $result = ''; 
    $box = range(0, 255); 
 
    $rndkey = array(); 
    for($i = 0; $i <= 255; $i++) { 
      $rndkey[$i] = ord($cryptkey[$i % $key_length]); 
    } 
 
    for($j = $i = 0; $i < 256; $i++) { 
      $j = ($j + $box[$i] + $rndkey[$i]) % 256; 
      $tmp = $box[$i]; 
      $box[$i] = $box[$j]; 
      $box[$j] = $tmp; 
    } 
 
    for($a = $j = $i = 0; $i < $string_length; $i++) { 
      $a = ($a + 1) % 256; 
      $j = ($j + $box[$a]) % 256; 
      $tmp = $box[$a]; 
      $box[$a] = $box[$j]; 
      $box[$j] = $tmp; 
      $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256])); 
    } 
 
    if($operation == 'DECODE') { 
      if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) { 
        return substr($result, 26); 
      } else { 
        return ''; 
      } 
    } else { 
      return $keyc.str_replace('=', '', base64_encode($result)); 
    } 
  } 
} // class end 
 
&#63;> 

Copy after login

demo.php示例程序如下:

<&#63;php 
require 'Cookies.class.php'; 
 
$type = isset($_GET['type'])&#63; strtolower($_GET['type']) : ''; 
 
if(!in_array($type, array('set','get','update','clear'))){ 
  exit('type not exists'); 
} 
 
$obj = new Cookies('member', 10); // obj 
 
switch($type){ 
 
  case 'set': // 设置 
    $data = array( 
      'name' => 'fdipzone', 
      'gender' => 'male' 
    ); 
    $obj->set('me', $data, 5); 
    echo 'set cookies'; 
    break; 
 
  case 'get': // 读取 
    $result = $obj->get('me'); 
 
    echo '<pre class="brush:php;toolbar:false">'; 
    print_r($result); 
    echo '
Copy after login
'; echo 'get cookies'; break; case 'update': // 更新 $data = array( 'name' => 'angelababy', 'gender' => 'female' ); $flag = $obj->update('me', $data); if($flag){ echo 'update cookies success'; }else{ echo 'update cookies false'; } break; case 'clear': // 清除 $obj->clear('me'); echo 'clear cookies'; break; } ?>

本文完整实例源码点击此处本站下载。

希望本文所述对大家的PHP程序设计有所帮助。

php中cookies怎设置多个值跟asp一样可以设置多个值

// set the cookies
setcookie("cookie[three]", "cookiethree");
setcookie("cookie[two]", "cookietwo");
setcookie("cookie[one]", "cookieone");

// after the page reloads, print them out
if (isset($_COOKIE['cookie'])) {    
foreach ($_COOKIE['cookie'] as $name => $value) {        
echo "$name : $value 
\n";    
}
}
?>

手册上的例子
 

PHP怎读取COOKIES

【IT168 技术文档】必须在服务器传送任何内容给客户浏览器之前为 Cookies 赋值。要做到这一点, cookies 的设置就必须放在 cookie 的名称,是一个字符串,例如: "CookieID" 。其间不允许有冒号,逗号和空格。这个参数是必须的,而其它的所有参数都是可选的。如果只有这一个参数被给出,那么这个 cookie 将被删除。
cookie 的值,通常是一个字符串变量,例如: $USERID 。也可以为它赋一个 ? 来略过值的设置。
cookie 失效的时间。如果被省略(或者被赋值为零), cookie 将在这个对话期( session )结束后失效。这个参数可以是一个绝对的时间,用 DD-Mon-YY HH:MM:SS 来表示,比如: "24-Nov-99 08:26:00" 。而更常用的是设置一个相对时间。这是通过 time() 函数或者 mktime 函数来实现的。比如 time()+3600 将使得 cookie 在一个小时后失效。
一个路径,用来匹配 cookie 的。当在一个服务器上有多个同名的 cookie 的设置,为避免混淆,就要用到这个参数了。使用 "/" 路径的和省略这个参数的效果是一样的。要注意的是 Netscape 的 cookie 定义是把域名放在路径的前面的,而 PHP 则与之相反。
服务器的域名,也是用来匹配 cookie 的。要注意的是:在服务器的域名前必须放上一个点( . )。例如: ".friendshipcenter.com" 。因为除非有两个以上的点存在,否者这个参数是不能被接受的。
cookie 的安全级,是一个整数。 1 表示这个 cookie 只能通过“安全”的网络来传送。 0 或者省略则表示任何类型的网络都可以
 

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