cURL不使用GET var和fopen - PHP

Question

I open test1.php in my browser, which should call test2.php with the GET variable id in the url which in turn should append the id and time to a local text file called test1.txt

But it doesn't work.

If I call test2.php directly with the GET var it works just fine - http://www.example.com/test2.php?id=123456 - but it doesn't work when I load test1.php in my browser.

test1.php

curl_setopt_array(
$ch, array(
CURLOPT_URL => 'http://www.example.com/test2.php?id=123456',
CURLOPT_RETURNTRANSFER => 0
));

curl_exec($ch);

test2.php

if(!isset($_GET['id'])) {
  die();
}

$ID = (int)$_GET['id'];

$myfile = fopen("test1.txt", "a") or die();
$txt = $ID . " - " .time() . "
";
fwrite($myfile, $txt);
fclose($myfile);

Is there a security measure in php to prevent this kind of action or am I just missing something really obvious here?

Answer 1

You need to initialize $ch:

$ch = curl_init();
url_setopt_array(
    $ch, array(
        CURLOPT_URL => 'http://www.example.com/test2.php?id=123456',
        CURLOPT_RETURNTRANSFER => 0
));

curl_exec($ch);