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1. PHPµÄCOOKIE
cookie ÊÇÒ»ÖÖÔÚÔ¶³Ìä¯ÀÀÆ÷¶Ë´¢´æÊý¾Ý²¢ÒÔ´ËÀ´¸ú×ÙºÍʶ±ðÓû§µÄ»úÖÆ¡£
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1.1 ÉèÖÃcookie:
    ¿ÉÒÔÓàsetcookie() »ò setrawcookie() º¯ÊýÀ´ÉèÖàcookie¡£Ò²¿ÉÒÔͨ¹ýÏò¿Í»§¶ËÖ±½Ó·¢ËÍhttpÍ·À´ÉèÖÃ.
1.1.1 Ê¹ÓÃsetcookie()º¯ÊýÉèÖÃcookie:
bool setcookie ( string name [, string value [, int expire [, string path [, string domain [, bool secure [, bool httponly]]]]]] )
     name:   cookie±äÁ¿Ãû
     value:   cookie±äÁ¿µÄÖµ
     expire:  ÓÐЧÆÚ½áÊøµÄʱ¼ä,
     path:    ÓÐЧĿ¼,
     domain: ÓÐЧÓòÃû,¶¥¼¶ÓòΨһ
     secure:  Èç¹ûֵΪ1,ÔòcookieÖ»ÄÜÔÚhttpsÁ¬½ÓÉÏÓÐЧ,Èç¹ûΪĬÈÏÖµ0,ÔòhttpºÍhttps¶¼¿ÉÒÔ.
Àý×Ó:
<?php
$value = 'something from somewhere';
setcookie("TestCookie", $value); /* ¼òµ¥cookieÉèÖà*/
setcookie("TestCookie", $value, time()+3600); /* ÓÐЧÆÚ1¸öСʱ */
setcookie("TestCookie", $value, time()+3600, "/~rasmus/", ".example.com", 1); /* ÓÐЧĿ¼ /~rasmus,ÓÐЧÓòÃûexample.com¼°ÆäËùÓÐ×ÓÓòÃû */
?>
ÉèÖöà¸öcookie±äÁ¿: setcookie('var[a]','value');ÓÃÊý×éÀ´±íʾ±äÁ¿,µ«ËûµÄϱ겻ÓÃÒýºÅ.ÕâÑù¾Í¿ÉÒÔÓÃ$_COOKIE[‘var’][‘a’]À´¶ÁÈ¡¸ÃCOOKIE±äÁ¿.
1.1.2. Ê¹ÓÃheader()ÉèÖÃcookie;
header("Set-Cookie: name=$value[;path=$path[;domain=xxx.com[;]]");
ºóÃæµÄ²ÎÊýºÍÉÏÃæÁгösetcookieº¯ÊýµÄ²ÎÊýÒ»Ñù.
±ÈÈç:
$value = 'something from somewhere';
header("Set-Cook


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