Home Backend Development PHP Tutorial php中cookie实现二级域名可访问操作的方法_PHP

php中cookie实现二级域名可访问操作的方法_PHP

May 31, 2016 pm 07:27 PM
cookie php secondary domain

本文实例讲述了php中cookie实现二级域名可访问操作的方法。分享给大家供大家参考。具体方法如下:

cookie在一些应用中很常用,假设我有一个多级域名要求可以同时访问主域名绑定的cookie,下面就来给大家具体介绍在php中利用setcookie实现二级域名可以成功访问主域名cookie值的方法.

有时候两个域名可能在不同的服务器上,但是我们依然希望二级域名能够顺利访问主域名的cookie,主域名可以顺利访问二级域名的cookie,比如sc.bitsCN.com 希望能访问 www.bitsCN.com 和 blog.bitsCN.com 的 cookie

下面介绍3种你可能常听到的全局cookie设置方式.

第一种实例代码如下:

代码如下:

setcookie("jb51",$s,time()+3600*12,'/','*.bitsCN.com');

*号无法成功设置一个cookie

第二种实例代码如下:

代码如下:

setcookie("jb51",$s,time()+3600*12,'/','.bitsCN.com');

成功设置一个全局cookie,这样在ss.bitsCN.com下也能正确读取

第三种实例代码如下:

代码如下:

setcookie("jb51",$s,time()+3600*12,'/','bitsCN.com');

成功设置一个全局cookie,在ss.bitsCN.com下也能正确读取

这种方式的理解是仅仅bitsCN.com能够读取,在FireFox下测试成功,IE下测试成功,代码如下:

代码如下:

setcookie("jb51",$s,time()+3600*12,'/','ss.bitsCN.com');

设置一个仅仅在ss.bitsCN.com域名下可以正确读取的cookie,网络上标准的说法为.bitsCN.com这样,也有*的说法(该说法完全错误).下面推荐一个不错的php cookie操作的类,可以设置cookie、获取cookie、删除cookie,代码如下:

代码如下:

/** 
* php cookie类 
* class:PHP_COOKIE 
*/ 
class PHP_COOKIE  
{  
  var $_name  = "";  
  var $_val   = array();  
  var $_expires;  
  var $_dir   = '/';// all dirs  
  var $_site  = ''; 
  function PHP_COOKIE($cname, $cexpires="", $cdir="/", $csite="")  
  {  
$this->_name=$cname; 
if($cexpires){  
  $this->_expires=$cexpires;  
}  
else{  
  $this->_expires=time() + 60*60*24*30*12; // ~12 months  

$this->_dir=$cdir;  
$this->_site=$csite;  
$this->_val=array();  
$this->extract();  
  } 
  function extract($cname="")  
  {  
if(!isset($_COOKIE)){  
  global $_COOKIE;  
  $_COOKIE=$GLOBALS["HTTP_COOKIE_VARS"];  

if(emptyempty($cname) && isset($this)){  
  $cname=$this->_name;  
}  
 
if(!emptyempty($_COOKIE[$cname])){ 
  if(get_magic_quotes_gpc()){  
$_COOKIE[$cname]=stripslashes($_COOKIE[$cname]);  
  }  
  $arr=unserialize($_COOKIE[$cname]); 
  if($arr!==false && is_array($arr)){ 
foreach($arr as $var => $val){ 
  $_COOKIE[$var]=$val; 
  if(isset($GLOBALS["PHP_SELF"])){  
  $GLOBALS[$var]=$val;  
  }  
}  
  } 
  if(isset($this)) $this->_val=$arr; 
}  
// 在全局范围内移除cookie  
unset($_COOKIE[$cname]);  
unset($GLOBALS[$cname]);  

function put($var, $value)  
{  
$_COOKIE[$var]=$value;  
$this->_val["$var"]=$value; 
if(isset($GLOBALS["PHP_SELF"])){  
  $GLOBALS[$var]=$value;  

if(emptyempty($value)){  
  unset($this->_val[$var]);  

  } 
  function clear()  
  {  
$this->_val=array();  
  } 
  function set()  
  {  
if(emptyempty($this->_val)){  
  $cookie_val="";  
}   
else {  
  $cookie_val=serialize($this->_val);  
}  
 
if(strlen($cookie_val)>4*1024){  
  trigger_error("The cookie $this->_name exceeds the specification for the maximum cookie size.  Some data may be lost", E_USER_WARNING);  
}  
setcookie("$this->_name", $cookie_val, $this->_expires, $this->_dir, $this->_site);  
  }  
}  
?>

希望本文所述对大家的PHP程序设计有所帮助。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1666
14
PHP Tutorial
1271
29
C# Tutorial
1251
24
PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP vs. Python: Understanding the Differences PHP vs. Python: Understanding the Differences Apr 11, 2025 am 12:15 AM

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

See all articles