php与xml文件（PHP读取XML文件的方法实例总结DOMDocument及simplexml方法）

php与xml文件

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

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

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1	$doc = new DOMDocument();

载入xml文件

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1	$doc->load("book.xml");

获取标签对象

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1	$books = $doc->getElementsByTagName("book");

获取标签的子对象

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1	$titles = $book->getElementsByTagName("title");

获取标签的值或属性

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1	$title = $titles->item(0)->nodeValue;

实例1，获取图书列表

book.xml

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<?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

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<?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

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<?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

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<?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

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<?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

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<?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);

希望本文所述对大家PHP程序设计有所帮助。

原文链接：https://blog.csdn.net/koastal/article/details/50705267