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<div class="codetitle"><a style="CURSOR: pointer" data="78091" class="copybut" id="copybut78091" onclick="doCopy('code78091')"> 代码如下:<div class="codebody" id="code78091">
function encode_pass($tex,$key,$type="encode"){
$chrArr=array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
'0','1','2','3','4','5','6','7','8','9');
if($type=="decode"){
if(strlen($tex)<14)return false;
$verity_str=substr($tex,8);
$tex=substr($tex,8);
if($verity_str!=substr(md5($tex),8)){
//完整性验证失败
return false;
}
}
$key_b=$type=="decode"?substr($tex,6):$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62];
$rand_key=$key_b.$key;
$rand_key=md5($rand_key);
$tex=$type=="decode"?base64_decode(substr($tex,6)):$tex;
$texlen=strlen($tex);
$reslutstr="";
for($i=0;$i<$texlen;$i++){
$reslutstr.=$tex{$i}^$rand_key{$i%32};
}
if($type!="decode"){
$reslutstr=trim($key_b.base64_encode($reslutstr),"==");
$reslutstr=substr(md5($reslutstr),8).$reslutstr;
}
return $reslutstr;
}
$psa=encode_pass("phpcode","taintainxousad");
echo $psa;
echo encode_pass($psa,"taintainxousad",'decode');
（编辑：李大同）
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