Skip to main content

IP to ISP/Country/City (GeoIP) using PHP

I've noted that many people are searching here about how to find out City/Country/ISP details from IP; often referred as GeoIP. Here, I've compiled my replies that once I posted to comp.lang.php


  1. Get the IP

  2. Refer http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml and see which whois server should be used for the whois lookup

  3. Now, do the whois lookup. e.g., whois -h whois.apnic.net 61.x.x.x

  4. Parse the results. AFAIK, it will have the ISP, City and Country info



For whois lookup, may use rwhois protocol through below PHP code:



<?php
function whois($host, $command)
{
  $fp = fsockopen ($host, 43, $errno, $errstr, 100);
  if (!$fp) {
     $result = $errstr . $errno . "\n";
  } else {
    fputs ($fp, $command . "\r\n\r\n");
    $result = '';
    while (!feof($fp)) {
      $result .= fgets ($fp, 128);
    }
    fclose ($fp);
  }
  return $result;
}

//debug...
echo whois('whois.internic.net', 'php.net');
?>



Related links


Labels:

Comments

Post a Comment

Popular posts from this blog

Converting PSD with PHP/ImageMagick

After seeing feature rich options in Imagick PECL extension at Mikko Koppanen 's (the author) website and also impressed with ImageMagick 's features, I have decided to use it for the PSD to XHTML conversion website that I'm architecting and managing. Since, the team wants programming help for converting PSD images, I have tried it (documentation is sparse on PSD handling) Converting PSD to PNG/JPEG/etc Note that, flattenImages() is needed for layered/multi-page PSD file. <?php $im = new Imagick('test.psd'); $im->flattenImages(); $im->setImageFormat('png'); $im->writeImage('test.png'); ?> Extracting PSD layers One by one <?php $im = new Imagick('test.psd'); $im->setImageFormat('png'); for ($i = 0, $num_layers = $im->getNumberImages(); $i $im->setImageIndex($i); $im->writeImage('layer' . $i . '.png'); } ?> Note that, there is a better version below In a single call with writeIm...
5 comments
Read more

Valen Smith, the English teacher videos are missing!

I vaguely remembered that sometimes around 2009, engVid on YouTube was very popular. I especially liked a teacher by name Valen Smith's videos. She was not only beautiful but also very good at explaining the English usage. I also vaguely remembered to check her channel ValenESL around 2015. But, not sure what happened to her or engVid, all her videos are sadly gone. I have also noted that many people on Twitter were asking the same. Not sure what happened. Some people seem to have reuploaded her videos and YouTube continuously removing them with a note "This video contains content from LearnVid, who has blocked it on copyright grounds." Strangely though, on Facebook, some people have managed to create a fake account using her old channel name ValenESL.
Post a Comment
Read more