使用XML作为项目的配置文件使用，并解析之，获得数据作为链接数据库的参数

xml文件：

<?xml version="1.0" encoding="utf-8"?>

<config>

<db>

<host>localhost</host>

<dbname>ecshop</dbname>

<user>root</user>

<pass>123</pass>

</db>

<smarty></smarty>

</config>

PHP文件：

<?php

header("Content-Type:text/html;charset=utf-8");

$doc = new DOMDocument('1.0','utf-8');

$doc->load("config.xml");

$host = $doc->getElementsByTagName('host')->item(0)->nodeValue;

$db = $doc->getElementsByTagName('dbname')->item(0)->nodeValue;

$user = $doc->getElementsByTagName('user')->item(0)->nodeValue;

$pass = $doc->getElementsByTagName('pass')->item(0)->nodeValue;

mysql_connect($host,$user,$pass,$db);

?>