PHP cookies enable two-level domain access to operational examples _php tutorial

Cookies are commonly used in some applications, I have a multi-level domain name to be able to access the primary domain binding cookie, let me give you a specific introduction in PHP using Setcookie to achieve a two-level domain name can successfully access the primary domain cookie value method.

Sometimes two domain names may be on different servers, but we still want the level two domain name to be able to access the primary domain of the cookie, the primary domain can access the two-level domain name cookies. For example, bbs.hzhuti.com would like to have access to www.hzhuti.com and blog.hzhuti.com cookies.
Here are 3 ways you can often hear global cookie settings

The code is as follows	Copy Code
Setcookie ("Hzhuti", $s, Time () +3600*12, '/', ' *.hzhuti.com ');

* Cannot set a cookie successfully

The code is as follows	Copy Code
Setcookie ("Hzhuti", $s, Time () +3600*12, '/', '. hzhuti.com ');

Successfully set a global cookie ss.hzhuti.com can also be read correctly

The code is as follows	Copy Code
Setcookie ("Hzhuti", $s, Time () +3600*12, '/', ' hzhuti.com ');

Successfully set a global cookie ss.hzhuti.com can also be read correctly

This way the understanding of the month's small liter is only hzhuti.com able to read. The month small liter tests successfully under the Firefox. Success under IE

The code is as follows	Copy Code
Setcookie ("Hzhuti", $s, Time () +3600*12, '/', ' ss.hzhuti.com ');

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

The standard on the web is said to be. Hzhuti.com this way.

There is also a saying (that is totally wrong ...). ）

Here is a good class of PHP cookie manipulation that can set cookies, get cookies, and delete cookies.

The code is as follows

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/** * PHP Cookie Class * 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; ~ 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= $arr; } Remove cookies at global scope Unset ($_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 $this->_name exceeds the specification for the maximum cookie size. Some data may lost ", e_user_warning); } Setcookie ("$this->_name", $cookie _val, $this->_expires, $this->_dir, $this->_site); } } ?>

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