ipinfo

#!/usr/bin/env php
<?php
function curl_get_contents($url, $json = false, $show_error = false) {
    if (!function_exists('curl_init')) { return file_get_contents($url); } // fallback
    $ch = curl_init();
    $options = array(
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_URL            => $url,
        CURLOPT_HEADER         => false,
    );
    curl_setopt_array($ch, $options);
    $response = curl_exec($ch);
    if ($response === false && $show_error) {
        echo 'ERROR: ' . curl_error($ch)."\n";
    }
    curl_close($ch);
    if ($json) {
        return json_decode($response, true);
    }
    return $response;
}

// conf
define('API_URL', 'http://ipinfo.io/');
define('DEBUG', false);

if (!DEBUG) { error_reporting(0); }

// throw errors on wrong usage..
if (php_sapi_name() !== 'cli') exit('ERROR: This script must be executed in cli.');

$addr = trim($argv[1]);

if (!empty($addr)) {
    if (preg_match('/[A-z0-9\.]+\.[A-z]+/', $addr)) { // is a domain?
        $addr = gethostbyname($addr);
        if ($addr === trim($argv[1])) {
            exit("ERROR: Domain not resolved.".PHP_EOL);    
        }
    } else if (!filter_var($addr, FILTER_VALIDATE_IP)) {
        exit("ERROR: Argument was not a valid IP or domain.".PHP_EOL);
    }
    $url = API_URL.$addr.'/json';
} else {
    $url = API_URL.'/json';
}

// get the data
$ip_data = curl_get_contents($url, true, DEBUG);

if ($ip_data === false) exit("ERROR: The API is not available.".PHP_EOL);

if (!empty($ip_data)) {
    $maxKeyLength = max(array_map('strlen', array_keys($ip_data))) + 1;
    foreach ($ip_data as $key => $value) {
        if (empty($value)) continue;
        echo str_pad(strtoupper($key), $maxKeyLength) . '= ' . $value . PHP_EOL;
    }
} else {
    exit("ERROR: API result is empty.".PHP_EOL);
}