FSOCK Port Scanner

<form class="form-horizontal" action="" method="post">
    <div class="control-group">
        <label class="control-label">Domain / IP</label>
        <div class="controls">
            <input type="text" class="input-xxlarge" name="domain" />
        </div>
    </div>
    <div class="control-group">
        <label class="control-label">Ports</label>
        <div class="controls">
            <input type="text" name="ports" class="input-xxlarge" placeholder="Enter each port seperated by a comma." />
        </div>
    </div>
    <div class="control-group">
        <div class="controls">
            <input type="submit" name="submit" value="Scan" class="btn btn-primary" />
        </div>
    </div>
</form>
<br /><br />

<?php

/*
*
* Port Scanner (via fsock)
* (c)2013 Dennis Kupec
*
*/

error_reporting(0);

if(isset($_POST['submit'])) {
    $list = $_POST['ports'];
    $domain = $_POST['domain'];

    if(!$list) $error = "Enter ports to test seperated by a comma.";
    if(!$domain) $error = "Enter an IP or domain to test.";

    if($error) echo($error);
    else {
        $list = str_replace(" ", "", $list);
        $ports = explode(",", $list);

        $results = array();
        foreach($ports as $port) {
            if($pf = @fsockopen($domain, $port, $err, $err_string, 1)) {
                $results[$port] = true;
                fclose($pf);
            } else {
                $results[$port] = false;
            }
        }

        echo("<b>Domain/IP Tested: </b>".$domain."<br /><br /><table class='table table-bordered'><tr><td><b>Port Number</b></td><td><b>Is Open?</b></td></tr>");
        foreach($results as $port=>$val)    {
            $prot = getservbyport($port,"tcp");
                echo("<tr><td>".$port." (".$prot.")</td>");
            if($val) {
                echo "<td><span style=\"color:green\">Open</span></td>";
            }
            else {
                echo "<td><span style=\"color:red\">Closed</span></td>";
            }
        }
        echo("</table>");
    }
}
?>