Small bug in php domain scanner.

[Barrucadu]

First of all, this is basicly a modified version of Jim_'s 3-char domain scanner script.

To see the bug, go here: http://mikor.clearlyhosted.org/scan.php and scan for a few hundred domains involving a hyphen (try sCV-VC, there arn't many of them regged).
The problem is, in hyphenated domains, sometimes characters are missed out, and I dont know why.

Here is the full code:

<?php

$ubound = $_POST['ubound'];
$i = $ubound;
$x = 0;
$x2 = 0;

function checkdomain($xserver, $xdomain) { 
	$sock = fsockopen($xserver,43) or die("Error Connecting To Whois Server"); 
	fputs($sock,"$xdomain\r\n"); 
	while(!feof($sock)){ 
		$result .= fgets($sock,128); 
	}
	fclose($sock); 
	if(eregi("No match",$result)||eregi("NOT FOUND",$result)){
		return true; 
	}else{
		return false; 
	}
} 

$V = array('a','e','i','o','u','y');
$C = array('b','c','d','f','g','h','j','k','l','m','n','p','q','r','s','t','v','w','x','z');
$N = array('0','1','2','3','4','5','6','7','8','9');

$L = $V + $C;
$A = $L + $N;

$dnstyle = $_POST['pattern'];

echo '<title>Domain Scan</title>
<style>
div{
	font-family:Verdana, Trebuchet MS;
	font-size:1em;
}
h1{
	font-size:5em;
	text-align:center;
}
td{
	vertical-align:top;
}
input{
	font-family:Verdana, Trebuchet MS;
	font-size:0.75em;
}
a:active, a:visited, a:link{
	text-decoration:none;
	color:#99AAFF;
}
a:hover{
	text-decoration:underline;
	color:#FF99AA;
}
</style>
<div>';

if(strlen($dnstyle) != 0){
	echo '<h1>'.$dnstyle.'</h1>
	<div align="center">
	<table border="0" cellpadding="10" cellspacing="10" width="100%"><tr><td>';

	while($i > 0){  
		$i2=0;
		$current = '';
	
		while($i2 < strlen($dnstyle)){
			if($dnstyle[$i2] == 'V'){
				$current .= $V[rand(0,count($V))];
			}elseif($dnstyle[$i2] == 'C'){
				$current .= $C[rand(0,count($C))];
			}elseif($dnstyle[$i2] == 'N'){
				$current .= $N[rand(0,count($N))];
			}elseif($dnstyle[$i2] == 'L'){
				$current .= $A[rand(0,count($A))];
			}elseif($dnstyle[$i2] == 'A'){
				$current .= $L[rand(0,count($L))];
			}else{
				$current .= $dnstyle[$i2];
			}
			$i2++;
		}
	
		$current = strtoupper($current);

		if(checkdomain("rs.internic.net",$current.".com")){ 
			echo "<strong>".(1+$ubound-$i)."]</strong> ".$current.".COM\n<br />";
			$i--;
			$x++;
			if($x == 10){
				$x = 0;
				$x2++;
				if($x2 != 5){
					echo '</td><td>';
				}else{
					echo '</td>';
				}
			}
			if($x2 == 5){
				$x2 = 0;
				echo '</tr><tr><td>';
			}
		} 

		ob_flush(); 
		flush(); 
	} 

	echo '</td></tr></table><a href="scan.php">Return</a></div>'; 

}else{
	echo '<h1>Domain Scan</h1>
	<div align="center">
	<form action="scan.php" method="post">
	<table border="0" cellpadding="10" cellspacing="10" width="100%">
	<tr><td>Domain Pattern:</td><td><input type="text" name="pattern" /></td></tr>
	<tr><td>Domains to Scan:</td><td><input type="text" name="ubound" value="30" /></td></tr>
	<tr><td colspan="2"><input type="submit" value="Scan" /></td></tr>
	<tr><td colspan="2">
	<strong>V</strong> = Vowel<br/>
	<strong>C</strong> = Consonant<br/>
	<strong>L</strong> = Letter<br/>
	<strong>N</strong> = Number<br/>
	<strong>A</strong> = Random<br/>
	<strong>Anything else will be left as it is in the domain.</strong> (eg: CVC-N)<br/>
	Note: This script counts "Y" as a vowel, not a consonant.
	</td></tr>
	</table></form></div>';
}

echo '</div>';
?>