تشخیص موقعیت از روی IP :


function detect($ip) {

    $default = 'UNKNOWN';

    if (!is_string($ip) || strlen($ip) < 1 || $ip == '127.0.0.1' || $ip == 'localhost') {

        $ip = '8.8.8.8';

    }

    $curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';

    $url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);

    $ch = curl_init();

    $curl_opt = array(

        CURLOPT_FOLLOWLOCATION  => 1,

        CURLOPT_HEADER      => 0,

        CURLOPT_RETURNTRANSFER  => 1,

        CURLOPT_USERAGENT   => $curlopt_useragent,

        CURLOPT_URL       => $url,

        CURLOPT_TIMEOUT         => 1,

        CURLOPT_REFERER         => 'http://' . $_SERVER['HTTP_HOST'],

    );

    curl_setopt_array($ch, $curl_opt);

    ob_start();

    curl_exec($ch);

    $content = ob_get_contents();

    ob_end_clean();

    curl_close($ch);

    

    if(preg_match('#<li>City : ([^<]*)</li>#i', $content, $regs)) {

        $city = $regs[1];

    }

    if(preg_match('#<li>State/Province : ([^<]*)</li>#i', $content, $regs)) {

        $state = $regs[1];

    }



    if($city != '' && $state != '') {

        $location = $city . ', ' . $state;

        return $location;

    }

    else {

        return $default; 

    }

}