javascript php 添加cookie,删除cookie

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php cookie

//add cookie

        $time = time() + 3600 * 24 * 30;
        setcookie('UserIId', $_GET["userid"], $time);
        setcookie('UserPwd', $_GET["pwd"], $time);

//del cookie

        $time = time() - 3600;
        setcookie('UserIId', '', $time);
        setcookie('UserPwd', '', $time);

//get cookie

$_COOKIE["UserIId"];

javascript

//add cookie
function saveTmpEmail(){
   var Then=new Date();
   var uemailStr=document.getElementById("login_email").value;
   Then.setTime(Then.getTime() +3600*1000*24*300 );

     document.cookie='UserIId='+uemailStr+';expires='+ Then.toGMTString();
     document.cookie='UserPwd=55555;expires='+Then.toGMTString();

}
//取cookie
function getCookieData(label){
var labelLen=label.length;
var cLen=document.cookie.length;
var i=0;
var cEnd;
  while(i<cLen){
   var j=i+labelLen;
  if(document.cookie.substring(i,j)==label){
      cEnd=document.cookie.indexOf(";",j);
      if(cEnd==-1){
        cEnd=document.cookie.length;
      }
      return document.cookie.substring(j+1,cEnd);
  }
  i++
  }
  return ""
}