Home Backend Development PHP Tutorial Example of how cookies can be used to implement secondary domain name accessibility in PHP_PHP Tutorial

Example of how cookies can be used to implement secondary domain name accessibility in PHP_PHP Tutorial

Jul 13, 2016 pm 04:57 PM
cookie php secondary domain Can exist Example accomplish Commonly used application I operate access

Cookies are very commonly used in some applications. I have a multi-level domain name that needs to be able to access the cookies bound to the main domain name at the same time. Let me introduce to you how to use setcookie in PHP to realize that the secondary domain name can successfully access the main domain name cookie. value method.

Sometimes the two domain names may be on different servers, but we still hope that the secondary domain name can successfully access the cookies of the primary domain name, and the primary domain name can successfully access the cookies of the secondary domain name. For example, bbs.hzhuti.com hopes to access the cookies of www.hzhuti.com and blog.hzhuti.com
Here are 3 global cookie setting methods that you may often hear

The code is as follows Copy code
 代码如下 复制代码

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

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

The number * could not successfully set a cookie
 代码如下 复制代码

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

The code is as follows Copy code

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

 代码如下 复制代码

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

Successfully set a global cookie and it can be read correctly under ss.hzhuti.com

The code is as follows Copy code
setcookie("hzhuti",$s,time()+3600*12,'/','hzhuti.com');

Successfully set a global cookie and it can be read correctly under ss.hzhuti.com
 代码如下 复制代码

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

In this way, Yue Xiaosheng understands that only hzhuti.com can read it. Yue Xiaosheng successfully tested under FireFox. Successfully under IE
The code is as follows Copy code
setcookie("hzhuti",$s,time()+3600*12,'/','ss.hzhuti.com');

Set a cookie that can only be read correctly under the ss.hzhuti.com domain name

The standard statement on the Internet is .hzhuti.com.

There is also a * statement (this statement is completely wrong...)

The following recommends a good php cookie operation class, which can set cookies, obtain cookies, and delete cookies.

The code is as follows
 代码如下 复制代码

/**
* 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(empty($cname) && isset($this)){
  $cname=$this->_name;
}
 
if(!empty($_COOKIE[$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(empty($value)){
  unset($this->_val[$var]);
}

  }

  function clear()
  {
$this->_val=array();
  }

  function set()
  {
if(empty($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);
  }
}
?>

Copy code
/**
* 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;

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

if(!empty($_COOKIE[$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; }
// Remove cookies globally
unset($_COOKIE[$cname]);
unset($GLOBALS[$cname]);
} function put($var, $value)
{
$_COOKIE[$var]=$value;
$this->_val["$var"]=$value; if(isset($GLOBALS["PHP_SELF"])){
$GLOBALS[$var]=$value;
} if(empty($value)){
unset($this->_val[$var]);
} } function clear()
{
$this->_val=array();
} function set()
{
if(empty($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);
}
}
?> http://www.bkjia.com/PHPjc/631507.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631507.htmlTechArticleCookies are very commonly used in some applications. I have a multi-level domain name that needs to be able to access the cookies bound to the main domain name at the same time. , let me introduce to you in detail how to use setcookie to realize the second-level domain name in php...
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 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)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles