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function randomkeys($length)
{
$key='';
$pattern='123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
for($i=0;$i<$length;$i++)
{
$key .= $pattern{mt_rand(0,47)};
}
return $key;
}
echo randomkeys(20);
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<?php
/*
* Created on 2010-3-11
* author:zhangfei
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*/
session_start();
class Check_Class{
public $h_img ;
public $c_back ;
public $c_front ;
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function Check_Class(){
$h_img = imagecreate(100,30);
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<?php
/* ----------------------------------------------------------------------------
* Script Name: encrypt.php
* Creation Date: 2008-4-7 10:36
* Last Modified: 2008-4-12 16:00
* Author: meyu
* Copyright (c) 2007
* Purpose: Êý×Ö×Ö·û´®¼òÒ×¼Ó½âÃÜ
* --------------------------------- ......