geoiplookup.php

<?php

/**
  * Get the user country code with package
  * 
  * Requires geoiplookup package installed
  * @link http://manpages.ubuntu.com/manpages/trusty/man1/geoiplookup.1.html
  * @param $ip user IP string
  * @param $args Array (optional parameters)
  */

function geoiplookup($ip, $args=null) {
    ob_start();
    system(sprintf('geoiplookup %s | sed -e "s/geoip country edition://I"', escapeshellarg($ip)));
    $raw = trim(ob_get_clean());

    if ( in_array('code', (array) $args) ) {
        // get only code
        preg_match('/[a-zA-Z]+,/si', $raw, $m);
        $code = array_shift($m);
        $c = preg_replace('/\,$/si', '', $code);
    } else if ( !in_array('full', (array) $args) ) {
        // get only name
        preg_match('/[a-zA-Z]+,(.*)/si', $raw, $m);
        $c = array_pop($m);
    } else {
        $c = $raw;
    }

    return trim($c);
}

// usage

geoiplookup('23.66.166.151');
// United States

geoiplookup('23.66.166.151', 'code');
// US

geoiplookup('23.66.166.151', 'full');
// US, United States