PHP编程：php使用COPY函数更新配置文件的方法

<?php
/*
 * File: _saveconfig.php
 * 
 * Modified: 2010-7-11
 * By:liulang
 * 说明：涉及到两个文件：_saveconfig.php和config.php当对后台的一些全局配置变量进行更新时,* 就更改后台的config.php然后通过这个文件更改前台的config.php文件(前后台文件都一样),* 这个是我曾经用过的一个方法,觉得还不错,拿出来与大家分享
 *
 * Created: 2010-6-20
 * By: liulang (xujiaphp@gmail.com)
 * 
 */
  $srcFile = '../'.$dRootDir.'#data/config.php';
  $dstFile = $dRootDir.'config.php'; 
  $content = file_get_contents($srcFile);
  $arr = array
  (
     array('SITENAME',$gSite['siteName']),array('SITENAMEEN',$gSite['siteNameEn']),array('SITEKEYWORDS',$gSite['siteKeywords']),array('SITEDESCRIPTION',$gSite['siteDescription']),array('URLPREFIX',$gUrlPrefix),array('DBHOST',$gDb['host']),array('DBUSER',$gDb['user']),array('DBPWD',$gDb['pwd']),array('DBNAME',$gDb['db']),array('DBPREFIX',$gDb['prefix']),array('DIR',$gUpload['dir']),array('IMAGEWIDTH',$gUpload['imageWidth']),array('IMAGEHEIGHT',$gUpload['imageHeight']),array('CONTACTUS',$contactus),array('MENUHIDDENDIV',$menuhiddendiv),array('THEME',$gTheme),array('DATE',date('Y-m-d')),array('USER',$dAdminName)
   );
   for ($i = 0; $i < count($arr); $i++)
   {
    $content = str_replace('~`~'.$arr[$i][0].'~`~',$arr[$i][1],$content);
   } 
   copy($dRootDir.'config.php',$dRootDir.'bak.config.php');
   //copy($dRootDir.'bak.config.php','../'.$dRootDir.'config.php');
   $done = file_put_contents($dstFile,$content);
   copy($dstFile,'../'.$dRootDir.'config.php');
?>

<?php
/*
 * File: config.php
 * 
 * Modified: 2010-09-20
 * By:admin
 * 
 * Created: 2010-6-20
 * By: liulang (xujiaphp@gmail.com)
 * 
 */
  $gVersion = '1.0';
  $gDb = array
  (
    'host' => 'localhost',//主机名
    'user' => 'root',//用户名
    'pwd' => '',//暗码
    'db' => 'sino',//数据库名
    'prefix' => 'sin_'  //数据库前缀
  );
  $gSite = array
  (
    'siteName' => '公司名','siteNameEn' => 'we are the company','siteKeywords' => '药物,医药,制药','siteDescription' => '公司名是一家从事00方面的公司' 
  );
  $gUpload = array
  (
    'dir' => 'uploads','imageWidth' => '120','imageHeight' => '*'  
  );
  $contactus = '';
  $menuhiddendiv = "";
  $FROMURL=$_SERVER["HTTP_REFERER"]?$_SERVER["HTTP_REFERER"]:$HTTP_SERVER_VARS["HTTP_REFERER"];
  $dRootDir = '../';
  $conn = mysql_connect($gDb['host'],$gDb['user'],$gDb['pwd']);
  mysql_select_db($gDb['db']) or die('database connect error!'); 
  mysql_query("SET NAMES 'gbk'"); 
?>