PHP读取XML文件的方法实例总结【DOMDocument及simplexml方法】

发布:smiling　来源: PHP粉丝网　添加日期：2021-12-16 11:15:09　浏览: 评论：0　

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

<?php

header("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

<?php

header("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

<?php

header("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);

实例2，读取配置文件

config.php

<?php

header("Content-type:text/html;charset=utf8");

$mysql = simplexml_load_file("config.xml");

$config['host'] = $mysql->host;

$config['username'] = $mysql->username;

$config['password'] = $mysql->password;

$config['databse'] = $mysql->database;

var_dump($config);