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附上一份开发作者用php写的MRP信息内部修改及压缩解压函数，还没来得及封装成类。
dnmrp.php 用于读取并修改mrp信息
<?php
function binadd($$f,$$n)
{
while(strlen($$f)<$$n)
$$f=’0’.$$f;
$$f=substr($$f,0,$$n);
return $$f;
}
function gb2u0($$f)
{return mb_convert_encoding(str_replace(chr(0),’’,$$f),’utf-8’,’gb2312’);}
function u2gb0($$f,$$n)
{
$$f=mb_convert_encoding($$f,’gb2312’,’utf-8’);
for($$a=strlen($$f);$$a<=$$n;$$a++)
{$$f.=chr(0);}
$$f=substr($$f,0,$$n);
return $$f;
}
function getmrp($$f)
{
/*
参数：文件路径
返回一个包含mrp信息的数组（UTF-8编码）
*/
$$f=fopen($$f,’rb’);
if(fread($$f,4)!=’MRPG’)
{fclose($$f);
return false;}
fseek($$f,52,SEEK_SET);
$$ch=gb2u0(fread($$f,16));
fseek($$f,192,SEEK_SET);
$$bb=hexdec(bin2hex(fread($$f,4)));
fseek($$f,196,SEEK_SET);
$$id=hexdec(bin2hex(fread($$f,4)));
fseek($$f,16,SEEK_SET);
$$nn=gb2u0(fread($$f,12));
fseek($$f,28,SEEK_SET);
$$xn=gb2u0(fread($$f,24));
fseek($$f,88,SEEK_SET);
$$zz=gb2u0(fread($$f,40));
fseek($$f,68,SEEK_SET);
$$bb2=hexdec(bin2hex(strrev(fread($$f,4))));
fseek($$f,72,SEEK_SET);
$$id2=hexdec(bin2hex(strrev(fread($$f,4))));
fseek($$f,128,SEEK_SET);
$$js=gb2u0(fread($$f,64));
fclose($$f);
return array(
’id’=>$$id2.’&’.$$id,
’ch’=>$$ch,
’bb’=>$$bb2.’&’.$$bb,
’nn’=>$$nn,
’xn’=>$$xn,
’zz’=>$$zz,
’js’=>$$js);
}
function putmrp($$fn,$$v)
{
/*
参数：文件路径、包含要修改为的mrp信息的数组（与getmrp的结构相同）
返回一个包含mrp信息的数组（UTF-8编码）
*/
$$fp=fopen($$fn,’r+’);
if(fread($$fp,4)!=’MRPG’)
{return false;}
$$ch=u2gb0($$v[’ch’],16);
$$nn=u2gb0($$v[’nn’],12);
$$xn=u2gb0($$v[’xn’],24);
$$zz=u2gb0($$v[’zz’],40);
$$js=u2gb0($$v[’js’],64);
$$id=explode(’&’,$$v[’id’]);
$$id2=pack(’H*’,binadd(dechex($$id[0]),8));
$$id=pack(’H*’,binadd(dechex($$id[1]),8));
$$bb=explode(’&’,$$v[’bb’]);
$$bb2=pack(’H*’,binadd(dechex($$bb[0]),8));
$$bb=pack(’H*’,binadd(dechex($$bb[1]),8));
fseek($$fp,16);
fwrite($$fp,$$nn.$$xn.$$ch.strrev($$bb2).strrev($$id2));
fseek($$fp,88);
fwrite($$fp,$$zz.$$js.$$bb.$$id);
fclose($$fp);
return true;
}
?>