【www.bbyears.com--php函数】
setcookie()语法
setcookie (PHP 3, PHP 4, PHP 5)
setcookie -- 发送一个 cookie 信息
说明：bool setcookie ( string name [, string value [, int expire [, string path [, string domain [, bool secure]]]]] )
例
写cookie
代码如下$value = "something from somewhere";
setcookie("TestCookie", $value);
setcookie("TestCookie", $value, time()+3600); /* expire in 1 hour */
setcookie("TestCookie", $value, time()+3600, "/~rasmus/", "example.com", 1);
?>
读cookie
代码如下
// Print an individual cookie
echo $_COOKIE["TestCookie"];
echo $HTTP_COOKIE_VARS["TestCookie"];
// Another way to debug/test is to view all cookies
print_r($_COOKIE);
?>
删除cookie
// set the expiration date to one hour ago
setcookie ("TestCookie", "", time() - 3600);
setcookie ("TestCookie", "", time() - 3600, "/~rasmus/", "example.com", 1);
?>
由于cookie与HTTP的特定方式，你必须在你输出任何文本前，传送出所有的cookie。否则PHP会给出警告，并且cookie也不会被传送。因此，这样做是正确的：
setcookie(’name’, ‘jeff’);
echo “Hello Everyone!”;
?>
以下是错误地：
代码如下
echo “Hello Everyone!”;
setcookie(’name’, ‘jeff’);
?>