<?php
namespace action\strlib;
class basicAction extends \action
{
// 数值型字符串,代号 1
private $cs1 = array('0','1','2','3','4','5','6','7','8','9');
// 纯小写字符串,代号 2
private $cs2 = 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');
// 多类型字符串,代号 3
private $cs3 = array
(
'0','1','2','3','4','5','6','7','8','9',
'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
);
public function randstr($len,$type=1)
{
if( $len<1 ) return false;
$RET = '';
switch( $type )
{
case 1:
$RET = $RET.$this->randcs1(false);
for( $i=2; $i<=$len; $i++ ) $RET = $RET.$this->randcs1();
return $RET;
case 2:
for( $i=1; $i<=$len; $i++ ) $RET = $RET.$this->cs2[rand(0,25)];
return $RET;
case 3:
$RET = $RET.$this->randcs3(false);
for( $i=2; $i<=$len; $i++ ) $RET = $RET.$this->randcs3();
return $RET;
default:
return false;
}
}
private function randcs1($zero=true)
{
$from = 1;
if( $zero ) $from = 0;
return $this->cs1[rand($from,9)];
}
private function randcs3($zero=true)
{
$from = 1;
if( $zero ) $from = 0;
return $this->cs3[rand($from,61)];
}
public function adpassword($password){
$a=range('A','Z');
$b=range('a','z');
$c=range(0,9);
$a=implode('',$a);
$b=implode('',$b);
$c=implode('',$c);
$res=$a.$b.$c;//生成随机字符串的源字符串
$str='';//初始化一个空的字符串
for($i=1;$i<=32;$i++){
$tmp=str_shuffle($res);
$str.=$tmp[0];
}
//$str 为我们生成的随机密码
$result_str=md5($password.$str);
$data=array(
'password'=>$result_str,
'salt'=>$str
);
return $data;
}
//可逆加密 key 密钥
/** $data = 'orderid=11'; // 被加密信息
$key = '3n4w'; // 密钥
$encrypt = A('strlib/basic/encrypt',array($data, $key));
$decrypt = A('strlib/basic/decrypt',array($encrypt, $key));
echo $encrypt, "\n", $decrypt;
**/
public function encrypt($data, $key)
{
$key = md5($key);
$x = 0;
$len = strlen($data);
$l = strlen($key);
$char = $str = '';
for ($i = 0; $i < $len; $i++)
{
if ($x == $l)
{
$x = 0;
}
$char .= $key{$x};
$x++;
}
for ($i = 0; $i < $len; $i++)
{
$str .= chr(ord($data{$i}) + (ord($char{$i})) % 256);
}
return base64_encode($str);
}
public function decrypt($data, $key)
{
$key = md5($key);
$x = 0;
$data = base64_decode($data);
$len = strlen($data);
$l = strlen($key);
$char = $str = '';
for ($i = 0; $i < $len; $i++)
{
if ($x == $l)
{
$x = 0;
}
$char .= substr($key, $x, 1);
$x++;
}
for ($i = 0; $i < $len; $i++)
{
if (ord(substr($data, $i, 1)) < ord(substr($char, $i, 1)))
{
$str .= chr((ord(substr($data, $i, 1)) + 256) - ord(substr($char, $i, 1)));
}
else
{
$str .= chr(ord(substr($data, $i, 1)) - ord(substr($char, $i, 1)));
}
}
return $str;
}
}
?>