一篇解密说明文
//0.php<?php
$OOO0O0O00=__FILE__;$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OO00O0000=26408;$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$O0O0000O0='OOO0000O0';eval(($$O0O0000O0('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')));return;?>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Ngr3LaAhOaRvGMlSQ+J05CAfl3J05i4SLkDZQu/HlMlrW1ZGOk405dpbL6TuQ+cYziEBljyYLCRmljA7Qu/HlMlrW1ZGOk405dpbL6TuQ+cYziEBljyY（后面还有大量数据，省略）其中，在“?>”后面的数据足有27KB（共27316字节）。显然，这些数据并不是直接输出给客户端的，而要在服务端经过一定的处理。这27KB的数据看起来很像base64编码，但是直接用base64_decode解码得不到任何有意义的结果。
仔细观察，在前面的PHP代码部分有一个eval。那就按照上一篇文章的办法，把它改成echo试试！
//1.php<?php
$OOO0O0O00=__FILE__;$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OO00O0000=26408;$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$O0O0000O0='OOO0000O0';echo(($$O0O0000O0('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')));return;?>/* 27316 bytes encoded data */运行方式还是 wget http://localhost/1.php -O1.txt ，运行结果如下：
//1.txt$OO0OO0000=$OOO000000{17}.$OOO000000{12}.$OOO000000{18}.$OOO000000{5}.$OOO000000{19};if(!0)$O000O0O00=$OO0OO0000($OOO0O0O00,'rb');$OO0OO000O=$OOO000000{17}.$OOO000000{20}.$OOO000000{5}.$OOO000000{9}.$OOO000000{16};$OO0OO00O0=$OOO000000{14}.$OOO000000{0}.$OOO000000{20}.$OOO000000{0}.$OOO000000{20};$OO0OO000O($O000O0O00,1182);$OO00O00O0=($OOO0000O0($OO0OO00O0($OO0OO000O($O000O0O00,908),'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=','ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/')));eval($OO00O00O0);用1.txt的结果替换1.php中那个echo，得到：
//1a.php<?php
$OOO0O0O00=__FILE__;$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OO00O0000=26408;$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$O0O0000O0='OOO0000O0';$OO0OO0000=$OOO000000{17}.$OOO000000{12}.$OOO000000{18}.$OOO000000{5}.$OOO000000{19};if(!0)$O000O0O00=$OO0OO0000($OOO0O0O00,'rb');$OO0OO000O=$OOO000000{17}.$OOO000000{20}.$OOO000000{5}.$OOO000000{9}.$OOO000000{16};$OO0OO00O0=$OOO000000{14}.$OOO000000{0}.$OOO000000{20}.$OOO000000{0}.$OOO000000{20};$OO0OO000O($O000O0O00,1182);$OO00O00O0=($OOO0000O0($OO0OO00O0($OO0OO000O($O000O0O00,908),'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=','ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/')));eval($OO00O00O0);return;?>/* 27316 bytes encoded data */又看到了eval，那就再换成echo吧！遗憾的是，这样做不能得到正确的结果。原因是：
文件末有27KB的数据，这些数据应该包含了经过编码的程序代码。
开头的解码脚本从__FILE__变量获取当前执行的文件名，然后定位到27KB数据内部的某个位置（可能是开头或中间），解码并执行那些数据中蕴藏的程序。
从0.php变换到1a.php的过程中，开头的解码脚本的长度被改变，造成不能定位到正确的位置。
在1a.php已经可以看到三个数字：26408、1182、908。但是，无法判断这些数字将使解码脚本定位到27KB数据的哪个位置。
老路行不通了！现在必须分析这段解码脚本的流程。先把代码整理一下：
<?php
$OOO0O0O00=__FILE__;$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OO00O0000=26408;$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$O0O0000O0='OOO0000O0';$OO0OO0000=$OOO000000{17}.$OOO000000{12}.$OOO000000{18}.$OOO000000{5}.$OOO000000{19};if(!0)$O000O0O00=$OO0OO0000($OOO0O0O00,'rb');$OO0OO000O=$OOO000000{17}.$OOO000000{20}.$OOO000000{5}.$OOO000000{9}.$OOO000000{16};$OO0OO00O0=$OOO000000{14}.$OOO000000{0}.$OOO000000{20}.$OOO000000{0}.$OOO000000{20};$OO0OO000O($O000O0O00,1182);$OO00O00O0=($OOO0000O0($OO0OO00O0($OO0OO000O($O000O0O00,908),'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=','ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/')));eval($OO00O00O0);return;?>/* 27316 bytes encoded data */然后，便是一行行弄清解码脚本中每个变量的值，这样就可以看懂其流程。例如$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');，可以在其后面加一句die($OOO000000);，就能看到这个变量的值是'th6sbehqla4co_sadfpnr'。
对解码脚本的分析结果是：
//1c.php<?php
$OOO0O0O00=__FILE__;//$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OOO000000='th6sbehqla4co_sadfpnr';$OO00O0000=26408;//$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};//$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};//$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$OOO0000O0='base64_decode';$O0O0000O0='OOO0000O0';//$OO0OO0000=$OOO000000{17}.$OOO000000{12}.$OOO000000{18}.$OOO000000{5}.$OOO000000{19};$OO0OO0000='fopen';//if(!0)$O000O0O00=$OO0OO0000($OOO0O0O00,'rb');$O000O0O00=fopen($OOO0O0O00,'rb');//$OO0OO000O=$OOO000000{17}.$OOO000000{20}.$OOO000000{5}.$OOO000000{9}.$OOO000000{16};$OO0OO000O='fread';//$OO0OO00O0=$OOO000000{14}.$OOO000000{0}.$OOO000000{20}.$OOO000000{0}.$OOO000000{20};$OO0OO00O0='strtr';//$OO0OO000O($O000O0O00,1182);fread($O000O0O00,1182);/*$OO00O00O0=($OOO0000O0(
$OO0OO00O0(
$OO0OO000O($O000O0O00,908),
'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=',
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
)
)
);*/$OO00O00O0=(base64_decode(
strtr(
fread($O000O0O00,908),
'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=',
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
)
));eval($OO00O00O0);return;?>/* 27316 bytes encoded data */其中涉及文件操作的，也就是这几句：
$OOO0O0O00=__FILE__;//获取当前文件名$O000O0O00=fopen($OOO0O0O00,'rb');//打开文件fread($O000O0O00,1182);//跳过1182字节$OO00O00O0=(base64_decode( strtr( fread($O000O0O00,908), 'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' ) ));//读取908字节，根据代码表替换字符，base64解码eval($OO00O00O0);//执行解码后的代码
在1a.php中把eval替换为echo之所以行不通，就是因为这里写着的跳过1182字节。跳过1182字节是针对原始文件而言的，修改过后文件大小改变，需要跳过的字节数就不一定是1182字节了。现在，只要从原始文件中跳过1182字节后复制908字节，替换掉fread($O000O0O00,908)，然后把eval换成echo就可以了。
不过，也许是因为我得到文件已经被别人修改过，跳过1182字节后复制的数据无法正确解码。我尝试复制了那27KB数据开头的908字节，才看到了正确的结果。
//2.php<?php $A='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';$OO00O00O0=(base64_decode( strtr( $A, 'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' ) ));echo($OO00O00O0);return;?>
//2.txtwhile(((isset($HTTP_SERVER_VARS['SERVER_NAME']))&&(!eregi('((.*\.)?dhainan\.com)|((\.*\\.)?hk2shou\.com)|((\.*\\.)?localhost)',$HTTP_SERVER_VARS['SERVER_NAME'])))||((isset($_SERVER['HTTP_HOST']))&&(!eregi('((.*\.)?dhainan\.com)|((\.*\\.)?hk2shou\.com)|((\.*\\.)?localhost)',$_SERVER['HTTP_HOST']))))die('请使用域名 dhainan.com hk2shou.com访问，本地请使用：localhost。程序购买请联系QQ：415204');$OO00O00O0=str_replace('__FILE__',"'".$OOO0O0O00."'",($OOO0000O0($OO0OO00O0($OO0OO000O($O000O0O00,$OO00O0000),'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=','ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'))));fclose($O000O0O00);eval($OO00O00O0);再次出现eval，还是没有解完。将2.txt内容替换掉2.php的echo部分，然后再整理代码、分析各变量：
//2a.php<?php
$OOO0O0O00=__FILE__;//$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OOO000000='th6sbehqla4co_sadfpnr';$OO00O0000=26408;//$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};//$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};//$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$OOO0000O0='base64_decode';$O0O0000O0='OOO0000O0';//$OO0OO0000=$OOO000000{17}.$OOO000000{12}.$OOO000000{18}.$OOO000000{5}.$OOO000000{19};$OO0OO0000='fopen';//if(!0)$O000O0O00=$OO0OO0000($OOO0O0O00,'rb');$O000O0O00=fopen($OOO0O0O00,'rb');//$OO0OO000O=$OOO000000{17}.$OOO000000{20}.$OOO000000{5}.$OOO000000{9}.$OOO000000{16};$OO0OO000O='fread';$OO0OO00O0=$OOO000000{14}.$OOO000000{0}.$OOO000000{20}.$OOO000000{0}.$OOO000000{20};$OO0OO00O0='strtr';//$OO0OO000O($O000O0O00,1182);fread($O000O0O00,1182);/*$OO00O00O0=($OOO0000O0(
$OO0OO00O0(
$OO0OO000O($O000O0O00,908),
'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=',
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
)
)
);*/$OO00O00O0=(base64_decode(
strtr(
fread($O000O0O00,908),
'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=',
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
)
));/*
while (
(
(isset($HTTP_SERVER_VARS['SERVER_NAME']))
&&
(!eregi('((.*\.)?dhainan\.com)|((\.*\\.)?hk2shou\.com)|((\.*\\.)?localhost)',$HTTP_SERVER_VARS['SERVER_NAME']))
)
||
(
(isset($_SERVER['HTTP_HOST']))
&&
(!eregi('((.*\.)?dhainan\.com)|((\.*\\.)?hk2shou\.com)|((\.*\\.)?localhost)',$_SERVER['HTTP_HOST']))
)
) die('请使用域名 dhainan.com hk2shou.com访问，本地请使用：localhost。程序购买请联系QQ：415204');
*//*
$OO00O00O0=str_replace(
'__FILE__',
"'".$OOO0O0O00."'",
($OOO0000O0(
$OO0OO00O0(
$OO0OO000O($O000O0O00,$OO00O0000),
'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=',
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
)
)
)
);*/$OO00O00O0=str_replace(
'__FILE__',
"'".$OOO0O0O00."'",
(base64_decode(
strtr(
fread($O000O0O00,26408),
'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=',
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
)
)
));fclose($O000O0O00);eval($OO00O00O0);?>那段判断域名的代码已经注释掉了。有用的就是最后一段：
# 先前已经打开文件，定位到27KB数据开头，读取908字节$OO00O00O0=str_replace( '__FILE__', "'".$OOO0O0O00."'", (base64_decode( strtr( fread($O000O0O00,26408), 'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' ) ) ));//读取26408字节，根据代码表替换字符，base64解码，把__FILE__替换为真正的当前文件名fclose($O000O0O00);//关闭文件eval($OO00O00O0);//执行代码
处理方法就很明显了，从原始文件的27KB数据开头起，跳过908字节，复制26408字节，替换掉fread($O000O0O00,26408)，eval换成echo。前面那次解码使用的代码也需要删除，但是$OOO0O0O00=__FILE__;这句要留着，因为str_replace里用到了这个变量。
//3.php<?php $OOO0O0O00=__FILE__;$A='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（后面还有大量数据，省略）';$OO00O00O0=str_replace( '__FILE__', "'".$OOO0O0O00."'", (base64_decode( strtr( $A, 'I/MNKACdVRGQyDWUgq68wpkazLO5ltnmTB+0bv9uHrxF7XSY1E3fZhijc4e2oJsP=', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' ) ) ));echo($OO00O00O0);?>
又一次 wget http://localhost/3.php -O3.txt ，获得最终结果！
//3.txtrequire('../class/connect.php');include('../class/db_sql.php');include('../class/config.php');include('../class/class.php');include('../class/user.php');include('../class/MemberLevel.php');include('../class/q_functions.php');include('../class/qinfofun.php');include('../class/checkedip.php');$link=db_connect();$empire=new mysqlquery();$ReturnIP=checkedip();if($public_r['addnews_ok']){printerror('NotOpenCQInfo','',1);}$classid=(int)$_GET['classid'];$jzfenleiform='';$sj_classid=array('96','97','98','99','100','101','102','103','104','105','106','107','108','109','110','111','112','113','114','115','116','9','134','135','136','137','138','139','143','145','146','147','148','149','150','153','154','156','157','10','158','159','160','161','162','163','164','165','166','167','168','169','170','171','11','172','173','174','175','176','179','180','181','182','183','184','185','186','189','190','191');
in_array($classid,$sj_classid)?$jzfenleiform='/sjpp.html':$jzfenleiform='/post.html';
$cate='';
$job_array=array('65','66','67','68','69','70','71','72','73','74','75','80','81','82','117','119','120','121','122','126','133');
$sale_array=array('22','23','24','25','26','27','28','29','30','31','32','33','36','37','38');
$car_array=array('83','84');
$marry_array=array('42','43','44');
if (in_array($classid,$job_array))
{
$cate='<tr><td align="right" valign="top"></td><td><input name="cate" id="cate" type="radio" value="招聘" checked="checked"><label for="cate">招聘</label><input name="cate" id="cate1" type="radio" value="求职"><label for="cate1">求职</label></td></tr>
<tr>
<td width="14%" align="right"><span class="redn">*</span> <strong>学 历：</strong></td>
<td width="86%"><select name="edu" id="edu"><option value="不限">不限</option><option value="高中/中专">高中/中专</option><option value="大专">大专</option><option value="本科">本科</option><option value="硕士以上">硕士以上</option></select> <span class="redn">*</span> <b>薪资：</b><input name="jiage" type="text" size=4 id="jiage" value="" onKeyUp="value=value.replace(/\D+/g,\'\')"> 元/月 <span class="redn">*</span> <b>专业</b> <input name="zhuanye" type="text" id="zhuanye" value="" size="8">
<span class="notes">如:艺术设计</span></td>
</tr>';
}
elseif (in_array($classid,$sale_array))
{
$cate='<tr><td align="right"></td><td><input name="cate" id="cate" type="radio" value="出售" checked="checked"><label for="cate">出售</label><input name="cate" id="cate1" type="radio" value="求购"><label for="cate1">求购</label><input name="cate" id="cate2" type="radio" value="交换"><label for="cate2">交换</label></td></tr> <tr>
<td width="14%" align="right"><span class="redn">*</span> <strong>成 色：</strong></td>
<td width="86%"><select name="chengse" id="chengse"><option value="全新">全新</option><option value="99成新">99成新</option><option value="95成新">95成新</option><option value="9成新">9成新</option><option value="8成新">8成新</option><option value="7成新">7成新</option><option value="6成以下">6成以下</option></select> <span class="redn">*</span> <b>价格：</b><input name="jiage" type="text" size=4 id="jiage" value="" onKeyUp="value=value.replace(/\D+/g,\'\')"> 元</td>
</tr>';
}
elseif (in_array($classid,$car_array))
{
$cate='<tr><td align="right" valign="top"></td><td><input name="cate" id="cate" type="radio" value="出售" checked="checked"><label for="cate">出售</label><input name="cate" id="cate1" type="radio" value="求购"><label for="cate1">求购</label></td></tr><tr>
<td width="14%" align="right"><span class="redn">*</span> <strong>成 色：</strong></td>
<td width="86%"><select name="chengse" id="chengse"><option value="全新">全新</option><option value="99成新">99成新</option><option value="95成新">95成新</option><option value="9成新">9成新</option><option value="8成新">8成新</option><option value="7成新">7成新</option><option value="6成以下">6成以下</option></select> <b>价格：</b><input name="jiage" type="text" size=4 id="jiage" value="" onKeyUp="value=value.replace(/\D+/g,\'\')"> 元</td>
</tr>';
}
elseif (in_array($classid,$marry_array))
{
$cate='<tr bgcolor="#CFE4A3">
<td align="right"><span class="redn">*</span> <strong>我的性别：</strong></td>
<td><input name="mysex" type="radio" id="mysex" value="男" checked="checked"><label for="mysex">男</label> <input name="mysex" id="mysex" type="radio" value="女"><label for="mysex">女</label> 年龄：<input name="myage" type="text" size=3 id="myage"> 岁 身高：<input name="myhight" type="text" id="myhight" value="" size="3"> CM 户籍：<select name="myhuji" id="myhuji"><option value="保密">保密</option><option value="北京">北京</option><option value="天津">天津</option><option value="河北">河北</option><option value="山西">山西</option><option value="内蒙古">内蒙古</option><option value="辽宁">辽宁</option><option value="吉林">吉林</option><option value="黑龙江">黑龙江</option><option value="上海">上海</option><option value="江苏">江苏</option><option value="浙江">浙江</option><option value="安徽">安徽</option><option value="福建">福建</option><option value="江西">江西</option><option value="山东">山东</option><option value="河南">河南</option><option value="湖北">湖北</option><option value="湖南">湖南</option><option value="广东">广东</option><option value="广西">广西</option><option value="海南">海南</option><option value="重庆">重庆</option><option value="四川">四川</option><option value="贵州">贵州</option><option value="云南">云南</option><option value="西藏">西藏</option><option value="陕西">陕西</option><option value="甘肃">甘肃</option><option value="青海">青海</option><option value="宁夏">宁夏</option><option value="新疆">新疆</option><option value="港澳台">港澳台</option><option value="外籍">外籍</option></select> 学历：<select name="myedu" id="myedu"><option value="保密">保密</option><option value="高中/中专">高中/中专</option><option value="大专">大专</option><option value="本科">本科</option><option value="硕士以上">硕士以上</option></select></td></tr>
<tr bgcolor="#EFC5ED">
<td width="14%" align="right" height="25"><span class="redn">*</span> <strong>对方要求：</strong></td>
<td width="86%" height="25"><input name="sex" id="sex" type="radio" value="男"><label for="sex">男</label> <input name="sex" id="sex" type="radio" value="女"><label for="sex">女</label> 年龄：<select name="age" id="age"><option value="不限">不限</option><option value="0-15岁">0-15岁</option><option value="16-22岁">16-22岁</option><option value="20-30岁">20-30岁</option><option value="31-40岁">31-40岁</option><option value="40-无限">40-无限</option></select> 身高：<select name="hight" id="hight"><option value="不限">不限</option><option value="145CM以下">145CM以下</option><option value="145-155CM">145-155CM</option><option value="155-165CM">155-165CM</option><option value="165-175CM">165-175CM</option><option value="175-185CM">175-185CM</option><option value="185CM以上">185CM以上</option></select> 户籍：<select name="huji" id="huji"><option value="不限">不限</option><option value="北京">北京</option><option value="天津">天津</option><option value="河北">河北</option><option value="山西">山西</option><option value="内蒙古">内蒙古</option><option value="辽宁">辽宁</option><option value="吉林">吉林</option><option value="黑龙江">黑龙江</option><option value="上海">上海</option><option value="江苏">江苏</option><option value="浙江">浙江</option><option value="安徽">安徽</option><option value="福建">福建</option><option value="江西">江西</option><option value="山东">山东</option><option value="河南">河南</option><option value="湖北">湖北</option><option value="湖南">湖南</option><option value="广东">广东</option><option value="广西">广西</option><option value="海南">海南</option><option value="重庆">重庆</option><option value="四川">四川</option><option value="贵州">贵州</option><option value="云南">云南</option><option value="西藏">西藏</option><option value="陕西">陕西</option><option value="甘肃">甘肃</option><option value="青海">青海</option><option value="宁夏">宁夏</option><option value="新疆">新疆</option><option value="港澳台">港澳台</option><option value="外籍">外籍</option></select> 学历：<select name="edu" id="edu"><option value="不限">不限</option><option value="高中/中专">高中/中专</option><option value="大专">大专</option><option value="本科">本科</option><option value="硕士以上">硕士以上</option></select></td>
</tr>';
}
$house='';
$chu_array=array('12','13','14','17','18','19');
$mai_array=array('15','16');
if (in_array($classid,$chu_array))
{
$house='<input name="jiage" type="text" id="jiage" size="4" onKeyUp="value=value.replace(/\D+/g,\'\')"> 元/月';
}
elseif (in_array($classid,$mai_array))
{
$house='<input name="jiage" type="text" id="jiage" size="4" onKeyUp="value=value.replace(/\D+/g,\'\')"> 万元';
}
$mid=(int)$_GET['mid'];
if(empty($classid)||empty($mid))
{
printerror('EmptyQinfoCid','',1);
}
$enews=$_GET['enews'];
if(empty($enews))
{
$enews='MAddInfo';
}
$muserid=(int)getcvar('mluserid');
$guserid=(int)getcvar('mluserid');
$musername=getcvar('mlusername');
$mrnd=getcvar('mlrnd');
$showkey='';
$r['newstext']='';
if($muserid)
{
$memberinfor=$empire->fetch1('select u.*,ui.* from '.$user_tablename." u LEFT JOIN {$dbtbpre}enewsmemberadd ui ON u.{$user_userid}=ui.userid where u.{$user_userid}='$muserid' limit 1");
}
if($enews=='MAddInfo')
{
$cr=DoQCheckAddLevel($classid,$muserid,$musername,$mrnd,0,1);
$mr=$empire->fetch1("select qenter,qmname,tobrf from {$dbtbpre}enewsmod where mid='$cr[modid]'");
if(empty($mr['qenter']))
{
printerror('NotOpenCQInfo','history.go(-1)',1);
}
$ecmsfirstpost=1;
$word='您当前选择的分类是：';
$rechangeclass=" <span class='px12'>[<a href='$jzfenleiform'>更改分类</a>]</span>";
if($cr['qaddshowkey'])
{
$showkey="<tr>
<td width=\"13%\" align=\"right\" valign=\"top\"><span class=\"redn\">*</span> <strong>验证码：</strong></td>
<td width=\"87%\"><input name=\"key\" type=\"text\" size=\"6\"> <img src=\"../ShowKey?ecms\"></td></tr>";
}
$imgwidth=0;
$imgheight=0;
if(strstr($mr['qenter'],'morepic<'))
{
$morepicnum=3;
$morepicpath="<table width='100%' border=0 align=center cellpadding=3 cellspacing=1>
<tr>
<td width='7%'><div align=center>1</div></td>
<td width='33%'><div align=center>
<input name=msmallpic[] type=text id=msmallpic[] size=28>
</div></td>
<td width='30%'><div align=center>
<input name=mbigpic[] type=text id=mbigpic[] size=28>
</div></td>
<td width='30%'><div align=center>
<input name=mpicname[] type=text id=mpicname[]>
</div></td>
</tr>
<tr>
<td><div align=center>2</div></td>
<td><div align=center>
<input name=msmallpic[] type=text id=msmallpic[] size=28>
</div></td>
<td><div align=center>
<input name=mbigpic[] type=text id=mbigpic[] size=28>
</div></td>
<td><div align=center>
<input name=mpicname[] type=text id=mpicname[]>
</div></td>
</tr>
<tr>
<td><div align=center>3</div></td>
<td><div align=center>
<input name=msmallpic[] type=text id=msmallpic[] size=28>
</div></td>
<td><div align=center>
<input name=mbigpic[] type=text id=mbigpic[] size=28>
</div></td>
<td><div align=center>
<input name=mpicname[] type=text id=mpicname[]>
</div></td>
</tr></table>";
}
$filepass=time();
}
else
{
$word='修改信息';
$ecmsfirstpost=0;
$id=(int)$_GET['id'];
if(empty($id))
{
printerror('EmptyQinfoCid','',1);
}
$cr=DoQCheckAddLevel($classid,$muserid,$musername,$mrnd,1,0);
$mr=$empire->fetch1("select qenter,qmname,tobrf from {$dbtbpre}enewsmod where mid='$cr[modid]'");
if(empty($mr['qenter']))
{
printerror('NotOpenCQInfo','history.go(-1)',1);
}
$r=CheckQdoinfo($classid,$id,$muserid,$cr['tbname'],$cr['adminqinfo'],1);
$imgwidth=170;
$imgheight=120;
$morepicpath='';
if(strstr($mr['qenter'],'morepic<'))
{
$morepicnum=0;
if($r[morepic])
{
$r[morepic]=stripSlashes($r[morepic]);
$j=0;
$pd_record=explode("\r\n",$r[morepic]);
for($i=0;$i<count($pd_record);$i++)
{
$j=$i+1;
$pd_field=explode('::::::',$pd_record[$i]);
$morepicpath.="<tr>
<td width='7%'><div align=center>".$j."</div></td>
<td width='33%'><div align=center>
<input name=msmallpic[] type=text value='".$pd_field[0]."' size=28>
</div></td>
<td width='30%'><div align=center>
<input name=mbigpic[] type=text value='".$pd_field[1]."' size=28>
</div></td>
<td width='30%'><div align=center>
<input name=mpicname[] type=text value='".$pd_field[2]."'><input type=hidden name=mpicid[] value=".$j.'><input type=checkbox name=mdelpicid[] value='.$j.'>删
</div></td></tr>';
}
$morepicnum=$j;
$morepicpath="<table width='100%' border=0 cellspacing=1 cellpadding=3>".$morepicpath.'</table>';
}
}
$filepass=$id;
}
$tbname=$cr['tbname'];
esetcookie('qeditinfo','dgcms');
$classurl=sys_ReturnBqClassname($cr,9);
$postclass="<a href='".$classurl."' target='_blank'><span class='redb'>".$class_r[$classid]['classname'].'</span></a>'.$rechangeclass;
if($cr['bclassid'])
{
$bcr['classid']=$cr['bclassid'];
$bclassurl=sys_ReturnBqClassname($bcr,9);
$postclass="<a href='".$bclassurl."' target=_blank><span class='redb'>".$class_r[$cr['bclassid']]['classname'].'</span></a> -> '.$postclass;
}
$url="<a href='../../'>首页</a> > <a href='../member/cp'>控制面板</a> > <a href='ListInfo.php?mid=".$cr['modid']."'>管理信息</a> > ".$word.' ('.$mr[qmname].')';
if(strstr($mr['qenter'],'playerid<'))
{
$player_sql=$empire->query("select id,player from {$dbtbpre}enewsplayer");
while($player_r=$empire->fetch($player_sql))
{
$select_player='';
if($r[playerid]==$player_r[id])
{
$select_player=' selected';
}
$player_class.="<option value='".$player_r[id]."'".$select_player.'>'.$player_r[player].'</option>';
}
}
if(strstr($mr['qenter'],'newstext<'))
{
$htmlareacode="<script type=\"text/javascript\">
_editor_url = \"../data/htmlarea\";
_editor_lang = \"en\";
</script>
<script type=\"text/javascript\" src=\"../data/htmlarea/htmlarea.php?userid=$muserid&username=$musername&rnd=$mrnd&classid=$classid&filepass=$filepass\"></script>
<script type=\"text/javascript\" src=\"../data/htmlarea/plugins/FullPage/full-page.js\"></script>
<script type=\"text/javascript\" src=\"../data/htmlarea/plugins/FullPage/lang/en.js\"></script>
<script type=\"text/javascript\">
//HTMLArea.loadPlugin(\"FullPage\");
var editor = null;
function initEditor() {
editor = new HTMLArea(\"newstext\");
editor.registerPlugin(FullPage);
editor.generate();
document.all['title'].focus();
return false;
}
function InsertFile(html){
editor.focusEditor();
editor.insertHTML(html);
}
</script>";
$onload='<script>initEditor();</script>';
}
if(empty($musername))
{
$musername='游客发布 <a href=../e/member/login class="px12">登陆</a> <a href=/e/member/register class="px12">注册</a>';
}
if (empty ($guserid))
{
$guserid="<tr><td align=\"right\" valign=\"top\"><strong>信息密码：</strong></td>
<td><input name=\"password\" type=\"text\" id=\"password\" value=\"\"> <span class=\"notes\">凭此密码您可以随时删除您发布的信息</span></td></tr>";
}
else
{
$guserid='';
}
$cnews='';
$new_classid=array('64');
in_array($classid,$new_classid)?$cnews='<script>
function bs(){
var f=document.add
if(f.title.value.length==0){alert("标题还没写");f.title.focus();return false;}
if(f.classid.value==0){alert("请选择栏目");f.classid.focus();return false;}
}
function foreColor(){
if(!Error()) return;
var arr = showModalDialog("../e/data/html/selcolor.html", "", "dialogWidth:18.5em; dialogHeight:17.5em; status:0");
if (arr != null) document.add.titlecolor.value=arr;
else document.add.titlecolor.focus();
}
function FieldChangeColor(obj){
if(!Error()) return;
var arr = showModalDialog("../e/data/html/selcolor.html", "", "dialogWidth:18.5em; dialogHeight:17.5em; status:0");
if (arr != null) obj.value=arr;
else obj.focus();
}
</script>':$cnews='';
$modfile='../data/html/q'.$cr['modid'].'.php';
include('../data/template/cp_3.php');
;echo '';echo $cnews;echo '';echo $htmlareacode;echo '<noscript>
<iframe src=*.htm></iframe>
</noscript>
<script language=javascript src="PopupCalendar.js"></script>
<script>
var oCalendarEn=new PopupCalendar("oCalendarEn"); //初始化控件时,请给出实例名称如:oCalendarEn
oCalendarEn.Init();
var oCalendarChs=new PopupCalendar("oCalendarChs"); //初始化控件时,请给出实例名称:oCalendarChs
oCalendarChs.weekDaySting=new Array("日","一","二","三","四","五","六");
oCalendarChs.monthSting=new Array("一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月");
oCalendarChs.oBtnTodayTitle="今天";
oCalendarChs.oBtnCancelTitle="取消";
oCalendarChs.Init();
</script>
<script language="javascript" type="text/javascript">
var annonymous = true;
function checkForm()
{
var frm;
frm = document.getElementById("add");
if(frm.title.value == ""){
alert("标题不能为空!");
frm.title.focus();
return false;
}
if(frm.title.value.length < 3){
alert("标题太短，至少3个字符以上!");
frm.title.focus();
return false;
}
if(frm.smalltext.value == ""){
alert("信息内容不能为空!");
frm.smalltext.focus();
return false;
}
if(frm.smalltext.value.length < 10){
alert("信息内容太短，至少10个字符以上!");
frm.smalltext.focus();
return false;
}
//if(frm.phone1.value == ""){
// alert("手机/电话号码不能为空!");
// frm.phone1.focus();
// return false;
//}
// var myreg = /^(((13[0-9]{1})|159)+\\d{8})$/;
//if(!myreg.test(frm.phone1.value))
//{
// alert(\'请输入合法的手机/电话号码！\');
// frm.phone1.focus();
// return false;
//}
if(frm.gqtime.value == ""){
alert("请选择信息有效时间!");
frm.gqtime.focus();
return false;
}
if(frm.gqtime.value.length < 8){
alert("输入格式不正确,格式：2007-08-01!");
frm.gqtime.focus();
return false;
}
if(frm.cncode.value == ""){
alert("请填写验证码!");
frm.cncode.focus();
return false;
}
return true;
}
</script>
<form name="add" id="add" method="POST" enctype="multipart/form-data" action="ecms.php" onsubmit="return checkForm()">
<input type=hidden value=';echo $enews;echo ' name=enews> <input type=hidden value=';echo $classid;echo ' name=classid>
<input name=id type=hidden id="id" value=';echo $id;echo '> <input type=hidden value="';echo $filepass;echo '" name=filepass>
<input name=mid type=hidden id="mid" value=';echo $mid;echo '>
<input type=hidden value=jzfenleiform name="';echo $jzfenleiform;echo '">
<table width="80%" border="0" align="center" cellpadding="4" cellspacing="4" style="font-size:14px">
<tr>
<td colspan="2"> ';echo $word;echo ' <span class="px14">';echo $postclass;echo '</span></td>
</tr>
<!--tr>
<td width="13%" align="right" valign="top"><strong>发布者：</strong></td>
<td width="87%"><font color=red>';echo $musername;echo '</font></td>
</tr-->
';
@include($modfile);
;echo ' ';echo $showkey;echo ' ';echo $ReturnIP;echo ' <tr>
<td align="center"> </td>
<td><input type="submit" name="addnews" value=" 发布信息 " class="bigbutton"></td>
</tr>
</form>
</td>
</tr>
</table>
<div class="mw">
';
db_close();
$empire=null;
include('../data/template/cp_4.php');
echo $onload;地址 ：http://www.cnblogs.com/shsgl/p/5955590.html
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