php cookie类(设置、获取、删除cookie值)

分享一个php cookie操作的类，可以设置cookie、获取cookie、删除cookie。

代码：

_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); 
  } 
} 
?>

调用示例： 1，设置cookie

put("namefirst","Jo");
$PHP_COOKIE->put("namelast","Foo");
$PHP_COOKIE->put("number","1234");
$PHP_COOKIE->put("time",time());
   // Set the cookie
$PHP_COOKIE->set();

$PHP_COOKIE=new PHP_COOKIE("test_cookie 123");
// Add the variables to be saved in the cookie
$PHP_COOKIE->put("namefirst","Jo123");
$PHP_COOKIE->put("namelast","Foo13");
$PHP_COOKIE->put("number","123413");
  // Set the cookie
$PHP_COOKIE->set();

echo "
The values saved in the cookie test_cookie are:";
echo "
namefirst: = $_COOKIE[namefirst]";
echo "
namelast: = $_COOKIE[namelast]";
echo "
number: = $_COOKIE[number]";
echo "
time: = $_COOKIE[time]";
echo "

END";
?>

2，获取cookie

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显示用于测试的一些cookie值" ;
echo "
 Name: ";
echo $_COOKIE['namefirst']; 
echo " ";
echo $_COOKIE['namelast'];
echo "
 Number: ";
echo $_COOKIE['number'];
echo "
 Time: ";
echo $_COOKIE['time'];

echo "

END";
?>

3，删除cookie

set();

// Clear all values
#$PHP_COOKIE->clear();
?>