echo get语法在引用中

Question

I have a script that send user to another url everytime he click (first click - first url, secound cluck - secound url etc.)

Here is the script:

<?php           
function urlredirect()
{
$value=0;
$url =array(
'http://www.link1.com/',
'http://www.link2.com/',
'http://www.link3.com/',
'http://www.link4.com/',
'http://www.link5.com/',
); 
$urlc = count($url)-1;
if ($_COOKIE["cooki_name"]=='') 
  {
setcookie("cooki_name", $value,time()+86400);
header ("Location: $url[$value]"); 
  }
  if ($_COOKIE["cooki_name"]!='') 
       {
  $getcookie=htmlspecialchars($_COOKIE["cooki_name"]);
    if($urlc >$getcookie)
  {
  $getcookie=$getcookie+1;
  }
  setcookie("cooki_name", $getcookie,time()+86400);
  header ("Location: $url[$getcookie]");
  }
  }
   urlredirect(); 
    ?>

Now I need to add some echo and I do not know the right syntax. Echo from get:

script.php?code=something

<?php           
function urlredirect()
{
$value=0;
$url =array(
'http://www.link1.com/HERE-IS-THE-PLACE-WHERE-I-NEED-TO-ADD-code',
'http://www.link2.com/',
'http://www.link3.com/',
....

I was trying to add it by echo $_GET["code"]; but I fail.

Answer 1

construct your array like this to paas the url parameter in url

$url =array(
 'http://www.link1.com/?code=some_value',
 'http://www.link2.com/?code=some_value',
 'http://www.link3.com/?code=some_value',
 'http://www.link4.com/?code=some_value',
 'http://www.link5.com/?code=some_value',
); 

Now on your redirected page you can use

echo $_GET['code'];

Edit Based on comments

$url =array(
 'http://www.link1.com/'.$_GET['code'],
 'http://www.link2.com/'.$_GET['code'],
 'http://www.link3.com/'.$_GET['code'],
 'http://www.link4.com/'.$_GET['code'],
 'http://www.link5.com/'.$_GET['code'],
);