我们可以使用javascript检索和设置PHP cookie

Question

I've set a cookie using PHP,

setcookie("redirect", $this->currentPage(), time() + 31536000);  

but I want to retrieve the value of this cookie using javascript when a certain link is clicked. How can I do that?

Answer 1

Yes its possible.

Try this to read cookie:

function getCookie(c_name) {
    var i,x,y,ARRcookies=document.cookie.split(";");
    for (i=0;i<ARRcookies.length;i++) {
       x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
       y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
       x=x.replace(/^\s+|\s+$/g,"");
       if (x==c_name){
         return unescape(y);
       }
    }
 }

// get cookie foo
var foo = getCookie('foo');

Try this to set a cookie:

/**
 * Sets a cookie
 */
function setCookie(c_name,value,exdays) {
    var exdate=new Date();
    exdate.setDate(exdate.getDate() + exdays);
    var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
   document.cookie=c_name + "=" + c_value;
}

// set a cookie 'foo=bar' for 3 days
setCookie('foo', 'bar', 3);