Php速率限制不适用于curl请求

I took this function to limit http requests surfing on internet:

  session_start();
  if (isset($_SESSION['LAST_CALL'])) {
    $last = strtotime($_SESSION['LAST_CALL']);
    $curr = strtotime(date("Y-m-d h:i:s"));
    $sec =  abs($last - $curr);
    if ($sec <= 2) {
      die('Rate Limit Exceeded');  // rate limit   
    }
  }
  $_SESSION['LAST_CALL'] = date("Y-m-d h:i:s");

It works with browser

but if I try a request with curl:

curl http://localhost/project/p.php

Nothing happens

How can I update this in order to make rate limit valid for curl too?

SOLUTION

I check if cookies are accepted by the client, if no exit:

setcookie('test', 1, time()+3600);
if(count($_COOKIE) == 0){
     die ("Cookie Not Enabled");
}

to make a curl request with cookies a save a cookie file and then I make another request with cookies:

curl http://localhost/project/p.php -c cookie-jar.txt

curl http://localhost/project/register.php --cookie "PHPSESSID=g90tqc0hvp6sodods9jisss912"

SOLUTION

I check if cookies are accepted by the client, if no exit:

setcookie('test', 1, time()+3600);
if(count($_COOKIE) == 0){
     die ("Cookie Not Enabled");
}

to make a curl request with cookies a save a cookie file and then I make another request with cookies:

curl http://localhost/project/p.php -c cookie-jar.txt

curl http://localhost/project/register.php --cookie "PHPSESSID=g90tqc0hvp6sodods9jisss912"