\n";
$ip = sprintf("%u", ip2long($addr));
// echo "Your IP, numerical: " . $ip . "
\n";
// Initiate the timer
$time_start = microtime_float();
// Open the csv file for reading
$handle = fopen("ip2country.csv", "r");
// Load array with start ips
$row = 1;
while (($buffer = fgets($handle, 4096)) !== FALSE) {
$array[$row] = substr($buffer, 1, strpos($buffer, ",") - 1);
$row++;
}
// Time loading
$time_end = microtime_float();
$time = substr($time_end - $time_start, 0, 7);
// echo "Array with " . $row . " start ips loaded in $time seconds
\n";
// Locate the row with our ip using bisection
$row_lower = '0';
$row_upper = $row;
while (($row_upper - $row_lower) > 1) {
$row_midpt = (int) (($row_upper + $row_lower) / 2);
if ($ip >= $array[$row_midpt]) {
$row_lower = $row_midpt;
}
else {
$row_upper = $row_midpt;
}
}
// Time locating
$time_end = microtime_float();
$time = substr($time_end - $time_start, 0, 7);
// echo "Row with your ip (# " . $row_lower . ") located after $time seconds
\n";
// Read the row with our ip
rewind($handle);
$row = 1;
while ($row <= $row_lower) {
$buffer = fgets($handle, 4096);
$row++;
}
$buffer = str_replace("\"", "", $buffer);
$ipdata = explode(",", $buffer);
// echo "Data retrieved from the csv file:
\n";
// echo "ipstart = " . $ipdata[0] . "
\n";
// echo "ipend = " . $ipdata[1] . "
\n";
// echo "registry = " . $ipdata[2] . "
\n";
// echo "assigned = " . date('j.n.Y', $ipdata[3]) . "
\n";
// echo "iso2 = " . $ipdata[4] . "
\n";
// echo "iso3 = " . $ipdata[5] . "
\n";
// echo "country = " . $ipdata[6] . "
\n";
$iso2 = $ipdata[4] ;
// Close the csv file
fclose($handle);
// Total execution time
$time_end = microtime_float();
$time = substr($time_end - $time_start, 0, 7);
// echo "Executing the whole script took $time seconds\n";
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
/*
?>