php后台多用户权限组思路与实现程序代码

//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;
 }
}

?>

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 "; 
}

}
?>