php后台多用户权限组思路与实现程序代码分享

<? 
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) { 
$cachefile = 'op/www.hzhuti.com/'.$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; 
} 
} 
?> 
 
adminconfig.php 后台权限配置文件,以一个数组形式保存 
 代码如下:

<? 
$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') 
), 
), 
); 
?> 
 
left.php文件很简单就是根据用户登录后ID读出权限 
 代码如下:

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


op.php这个文件就是要调用我们的adminconfig.php文件，然后利用fun.php文件中函数把提供过来的数据保存成数组如图

 
点击保存我们调用了opsava.php 文件，代码如下
 代码如下:

<? 
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>"; 
} 
?> 
 
保存成功后文件内容如 
 代码如下:

<?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' 
) 
?> 
 
这样的话我们的left只要加载 7.php文件就只会显示这里在的文件，这样一个基本的后台权限就完成了。