Getting multiple http response codes using cURL?

Question

Please take a look at this sample code:

function http_response($url)
{
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_HEADER, TRUE);
        curl_setopt($ch, CURLOPT_NOBODY, TRUE); // remove body
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        $head = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

        echo $httpCode ;
}

this code will print the httpCode of the given url. I have couple of questions:

Can I get rid of some setopt() lines here and still getting httpCode?
What about if I want to check multiple urls at the same time? Can I modify the code to do that?
Can I do the same functionality in a simpler way using libraries different than cURL?

Thanks :)

Karl Laurentius Roos · Accepted Answer · 2011-04-26 21:55:23Z

1

You should be able to remove CURLOPT_HEADER and CURLOPT_NOBODY and still get the same result.

You could do that like this:

$urls = array(
    'http://google.com',
    'http://facebook.com'
);

$status = array();

foreach($urls as $url){
    $status[$url] = http_response($url);
}

Try print_r($status); after this and you'll see the result.

You could do this with file_get_contents and $http_response_header, to learn more: http://www.php.net/manual/en/reserved.variables.httpresponseheader.php I would however recommend using cURL anyway.

answered Apr 26, 2011 at 21:55

Karl Laurentius Roos

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3 Comments

iTurki Over a year ago

Thanks Rose. Regarding the second point, I want to finish checking multiple urls in parallel to save time. I think the loop approach is not good here because it will process the urls one after the other. Any ideas?

kmoser Over a year ago

You could spawn multiple processes and let them run in parallel.

Karl Laurentius Roos Over a year ago

Take a look at php.net/manual/en/function.popen.php you wouldn't save that much time actually but it could be worth a try.

Andrei Stanca · Accepted Answer · 2011-04-26 23:41:56Z

1

*2. to check multiple urls you have to use this function in a loop, in any programming language 1 response from a server = 1 connection to that server. If you want to use 1 function to get responses from multiple servers you can always pass an array to the function and do the loop inside the function

*3. you can try this way:

function get_contents() {
  file_get_contents("http://example.com");
  var_dump($http_response_header);
}


get_contents();

edited Apr 26, 2011 at 23:41

answered Apr 26, 2011 at 22:03

Andrei Stanca

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