php - Checking if website is down using curl -

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i using following code see if website down or not.

<?php     if (isset($_post['submit'])) {         $url = $_post['url'];         $curl = curl_init($url);         curl_setopt($curl, curlopt_nobody, true);         curl_setopt($curl, curlopt_followlocation, true);         curl_exec($curl);         $code = curl_getinfo($curl, curlinfo_http_code);         if ($code == 200) {             echo "<h3>up!</h3>";         } else {             echo "<h3>down!</h3>";         }     } ?>  <form action="" method="post">     url: <input type="text" name="url" /><br />     <input type="submit" name="submit" /> </form>

the issue having when check facebook.com says down isn't...

why doing this? orginally thought https google works fine.

i believe curl isn't following http redirects, means you'll receive 301 response facebook.

here's thread on how make curl follow redirects:

make curl follow redirects?


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