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<?php

//retrieve our data from POST

$account_admin_username = $_POST['account_admin_username'];
$account_admin_password = $_POST['account_admin_password'];

function generate_password($length='')
{
$str='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_?/:(){}[]0123456789';
$max=strlen($str);
$length=@round($length);
if(empty($length)){$length=rand(8,12);}
$account_admin_password='';
for($i=0; $i<$length; $i++){$password.=$str{rand(0,$max-1)};}
return $account_admin_password;
}

$account_admin_password_hash = hash('sha512', $account_admin_password);
$account_admin_reset_code_hash = hash('sha512', $account_admin_reset_code);

//creates a 3 character sequence [password]

function createSalt()
{
    $string = md5(uniqid(rand(), true));
    return substr($string, 0, 3);
}
$account_admin_password_salt = createSalt();
$account_admin_password_hash = hash('sha512', $account_admin_password_salt . $account_admin_password_hash);

$account_admin_reset_code_salt = createSalt();
$account_admin_reset_code_hash = hash('sha512', $account_admin_reset_code_salt . $account_admin_reset_code_hash);

<cut the rest out>