Service status checking with port scanning

SimplexProbe.php

#!/usr/bin/php -q
<?php

function check_socket($host, $port)
{
    $conn = @fsockopen($host, $port, $errno, $errstr, 2);
    if ($conn) {
        fclose($conn);
        return true;
    }
    return false;
}

echo 'localhost:8080 ' . (check_socket('localhost', 8080) ? 'OK' : 'NOK') . PHP_EOL;