www.gusucode.com > 仿51.com的php源码 1.1 > User/UserCheck.php

    <?php
 header   ("Cache-Control:   no-cache,   must-revalidate");     
 header   ("Pragma:   no-cache");   
?><?php include("../include/dbclass.php"); ?>
<?php
$Users=$_GET["user"];
$db=new DbConn();
$sql="select User_Account from userdata where User_Account='$Users'";
$query_id=$db->query($sql);
$num=$db->num_rows($query_id);
if ($num==0)
{
echo("false");
}
else
{
echo("true|");
$array = array(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,0,1,2,3,4,5,6,7,8,9); 
$key = array_rand($array,36);
$User=strtolower($Users);

$j=0;
while ($j<=2)
{
$str =$User;

for($i=$j;$i<36;$i++)
{
$str .= $array[$key[$i]];


$sql="select User_Account from userdata where User_Account='$str'";
$query_id=$db->query($sql);
$num=$db->num_rows($query_id);
if ($num==0)
{
echo $str;
if ($j !=2)
{
echo ",";
}
break;
}
else
{
continue; 
}

}
$j++; 
}

//echo $str; 

}
?>