本文实例讲述了PHP读取XML文件的方法。分享给大家供大家参考，具体如下：

使用DOMDocument对象读取xml

创建一个DOMDocument对象

$doc = new DOMDocument();

载入xml文件

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

获取标签对象

$books = $doc->getElementsByTagName("book");

获取标签的子对象

$titles = $book->getElementsByTagName("title");

获取标签的值或属性

$title = $titles->item(0)->nodeValue;

实例1，获取图书列表

book.xml

<?xml version="1.0" encoding="UTF-8"?><bookstore>  <book>    <title>PHP和MySQL开发</title>    <author>谭浩强</author>  </book>  <book>    <titile>xml从入门到精通</titile>    <author>郑智化</author>  </book></bookstore>

load.php

<?phpheader("Content-type:text/html;charset=utf8");$doc = new DOMDocument();  //创建DOMDocument对象$doc->load("book.xml");  //打开book.xml$books = $doc->getElementsByTagName("book"); //获取book标签对象foreach ($books as $book){  //遍历对象  $titles = $book->getElementsByTagName("title");  //获取book标签下的title标签  $title = $titles->item(0)->nodeValue;  //获取标签的值  $authors = $book->getElementsByTagName("author");//获取book标签下的author标签  $author = $authors->item(0)->nodeValue;  //获取标签的值  $item["title"] = $title;  $item["author"] = $author;  $bookinfo[] = $item;}var_dump($bookinfo);

实例2，读取配置文件

config.xml

<?xml version="1.0" encoding="UTF-8"?><mysql>  <host>127.0.0.1</host>  <username>root</username>  <password></password>  <database>test</database></mysql>

config.php

<?phpheader("Content-type:text/html;charset=utf8");$doc = new DOMDocument();  //创建DOMDocument对象$doc->load("config.xml");  //打开config.xml$mysql = $doc->getElementsByTagName("mysql"); //获取mysql标签对象$host = $mysql->item(0)->getElementsByTagName("host");$config["host"] = $host->item(0)->nodeValue;$username = $mysql->item(0)->getElementsByTagName("username");$config["username"] = $username->item(0)->nodeValue;$password = $mysql->item(0)->getElementsByTagName("password");$config["password"] = $password->item(0)->nodeValue;$database = $mysql->item(0)->getElementsByTagName("database");$config["database"] = $database->item(0)->nodeValue;var_dump($config);

使用simplexml方法读取xml

实例1，获取图书列表

load.php

<?phpheader("Content-type:text/html;charset=utf8");$books = simplexml_load_file("book.xml");foreach($books as $book){  $item["title"] = $book->title;  $item["author"] = $book->author;  $booklist[] = $item;}var_dump($booklist);