我发现很难得到evercookie设置的cookie值。
我想做的是简单地检查如果evercookie与名称设置或不设置。如果没有设置，那么我想将其设置为某个数字。
如下所示:Var cookie_value = get_cookie_value;If (cookie_value == notdefined)设置cookie为"12345"其他的想要在PHP代码中使用它
evercoohie的使用代码如下http://samy.pl/evercookie/
var ec = new evercookie();
// set a cookie "id" to "12345"
// usage: ec.set(key, value)
ec.set("id", "12345");
// retrieve a cookie called "id" (simply)
ec.get("id", function(value) { alert("Cookie value is " + value) });
// or use a more advanced callback function for getting our cookie
// the cookie value is the first param
// an object containing the different storage methods
// and returned cookie values is the second parameter
function getCookie(best_candidate, all_candidates)
{
alert("The retrieved cookie is: " + best_candidate + "'n" +
"You can see what each storage mechanism returned " +
"by looping through the all_candidates object.");
for (var item in all_candidates)
document.write("Storage mechanism " + item +
" returned " + all_candidates[item] + " votes<br>");
}
ec.get("id", getCookie);
// we look for "candidates" based off the number of "cookies" that
// come back matching since it's possible for mismatching cookies.
// the best candidate is very-very-likely the correct one
在这个例子中，cookie的名称是'id'，所以下面是在PHP中检查它的方法:
<?php
if (isset($_COOKIES['id'])) {
//... cookie was set
} else {
//... no cookie was set
setcookie('id',$somenumber) ;
}
?>
不幸的是，这只会设置主HTTP cookie，而不是所有其他evercookie元素。但是，在下一次刷新时，evercookie代码应该检测到其中一个元素包含一个值，并将所有其他元素设置为相同的值。