我无法在 php 中设置 cookie [重复]

Question

  <?php
  $product1 = "user";


  if(!isset($_COOKIE[$cookie_name])) {
  $value=1;
  echo "Cookie named '" . $product1 . "' is not set!";
   setcookie($product1, $value, time() + (86400 * 30), "/");
   } else {
  echo "Cookie '" . $product1 . "' is set!<br>";
  echo "Value is: " . $_COOKIE[$product1];
   $value=$_COOKIE[$product1];
   setcookie($product1, $value, time() + (86400 * 30), "/");
   }
   ?>

// 刷新页面后，我不断收到名为 user is not set 的消息 cookie。请帮忙

Answer 1

  $product1 = "user";
//print_r($_COOKIE);

  if(!isset($_COOKIE[$product1])) {
  $value=1;
  echo "Cookie named '" . $product1 . "' is not set!";
   setcookie($product1, $value, time() + (86400 * 30), "/");
   } else {
  echo "Cookie '" . $product1 . "' is set!<br>";
  echo "Value is: " . $_COOKIE[$product1];
   $value=$_COOKIE[$product1];
   setcookie($product1, $value, time() + (86400 * 30), "/");
   }