php后台多用户权限组思路与实现程序代码

<?
function findsub($keys ,$userid='abc' ) //此函数重要就是为了调用用户的权限信息
{
 include('user/'.$userid.'.php'); 
 foreach($bb as $key=>$submenu)
 {    
  foreach($submenu  as $subkey=>$menuitem)
  {
   if( $subkey == $keys )
   {
    return 1;    
   }
  }  
 }
}

//下面为生成用户的php权限文件
//写入
function cache_write($name, $var, $values) {
 $cachefile = 'op/user/'.$name.'.php';
 $cachetext = "<?phprn".'$'.$var.'='.arrayeval($values)."rn?>";
 if(!swritefile($cachefile, $cachetext))
 {
  exit("File: $cachefile write error.");
 }
}

//数组转换成字串
function arrayeval($array, $level = 0) {
$space = '';
 for($i = 0; $i <= $level; $i++) {
  $space .= "t";
 }
$evaluate = "Arrayn$space(n";
$comma = $space;
 foreach($array as $key => $val) {
  $key = is_string($key) ? '''.addcslashes($key, ''\').''' : $key;
  $val = !is_array($val) && (!preg_match("/^-?d+$/", $val) || strlen($val) > 12) ? '''.addcslashes($val, ''\').''' : $val;
  if(is_array($val)) {
   $evaluate .= "$comma$key => ".arrayeval($val, $level + 1);
  } else {
   $evaluate .= "$comma$key => $val";
  }
   $comma = ",n$space";
 }
  $evaluate .= "n$space)";
  return $evaluate;
}

//写入文件
function swritefile($filename, $writetext, $openmod='w') {
 if(@$fp = fopen($filename, $openmod)) {
  flock($fp, 2);
  fwrite($fp, $writetext);
  fclose($fp);
  return true;
 } else {
  exit("File: $filename write error.");
  return false;
 }
}

?>

<?
$menus = array(
 
  'news' => array(
   'caption'=>'资讯管理',
   'icon'=>'admin/icon_15.gif',
   'sub' => array(
    'newsaddtype' => array('caption' => '分类增加', 'url' => 'news/addtype.php'),
    'newstypemange' => array('caption' => '分类管理', 'url' => 'news/typemange.php'),    
    'newsnewsend' => array('caption' => '发布资讯', 'url' => 'news/newsend.php'),
    'newsnewmange' => array('caption' => '资讯管理', 'url' => 'news/newmange.php'),
    'newscomments' => array('caption' => '评论管理', 'url' => 'news/comments.php'),
    
   ),
  ),
  
  'ask' => array(
   'caption'=>'问卷调查',
   'icon'=>'admin/icon_15.gif',
   'sub' => array(
    'voteadmin_subject_add' => array('caption' => '添加投票主题', 'url' => 'vote/admin_subject_add.php'),
    'voteadmin_subject' => array('caption' => '管理投票主题', 'url' => 'vote/admin_subject.php'),
    'voteadmin_title_add' => array('caption' => '添加投票问题', 'url' => 'vote/admin_title_add.php'),
    'voteadmin_title' => array('caption' => '管理投票问题', 'url' => 'vote/admin_title.php'),
    'voteadmin_question_add' => array('caption' => '添加投票答案', 'url' => 'vote/admin_question_add.php'),
    'voteadmin_question' => array('caption' => '管理投票答案', 'url' => 'vote/admin_question.php'),
    'voteadmin_system' => array('caption' => '投票初始配置', 'url' => 'vote/admin_system.php')
   ),
  ),
  'ads' => array(
   'caption'=>'广告管理',
   'icon'=>'admin/icon_15.gif',
   'sub' => array(
    'ada' => array('caption' => '增加广告', 'url' => 'ada.php'),
    'adm' => array('caption' => '广告管理', 'url' => 'adm.php'),   
    'flashadd' => array('caption' => '焦点图广告增加', 'url' => 'flashadd.php'),
    'flashad' => array('caption' => '焦点图广告管理', 'url' => 'flashad.php')
   ),
  ), 
  
  
  'mange' => array(
   'caption'=>'系统管理员',
   'icon'=>'admin/icon_15.gif',
   'sub' => array(
    'adminuser' => array('caption' => '管理员添加', 'url' => 'adminuser.php'),
    'modpass' => array('caption' => '密码修改', 'url' => 'modpass.php')    
   ),
  ),
 );
?>

<?
$userid = $_SESSION['adminid'];
include("op/admincofig.php");
include("op/user/".$userid.".php");

foreach($bb as $key=>$submenu)
{    
 echo "<tr><td  bgcolor="#D879A7" style="line-height:22px;text-align:center;color:#ffffff;"> nr <font color="#EA6A8D" face="Webdings"></font><b>".$menus[$key]['caption']."</b><br /></td></tr> nr <tr ><td bgcolor="F5E8F1">";
 foreach($submenu  as $subkey=>$menuitem)
 {
  $tmparr = explode("|",$menuitem);
  echo "<font color="#EA6A8D" face="Webdings">4</font><a href='".$tmparr[1]."' target="mainframe">".$tmparr[0]."</a><br> nr";
 }
 echo "</td></tr> nr "; 
}

<?
include("op/fun.php");
if( $_POST )
{
 $sarray =  $_POST ;
 cache_write($userid,'bb',$sarray);//写入缓存
 echo "<script>alert('编辑保存成功！');location='op.php?userid=".$userid."';</script>";

}
?>

<?php
$bb=Array
 (
 'member' => Array
  (
  'user_search' => '会员升级管理|user_search.php'
  ),
 'membercy' => Array
  (
  'cyuser_search' => '会员升级管理|cyuser_search.php',
  'cyuser_search5' => '交友会员|cyuser_search.php?grade=5'
  ),
 'userid' => 7,
 'button' => '保存编辑'
 )
?>