用PHP编写和读取XML的几种方式
2024-05-04 22:27:39
供稿：网友
一.使用DOM生成和读取XML文件
实例一：
代码如下:
<?php
//Creates XML string and XML document using the DOM
$dom = new DomDocument('1.0');
//add root - <books>
$books = $dom->appendChild($dom->createElement_x_x ('books'));
//add <book> element to <books>
$book = $books->appendChild($dom->createElement_x_x ('book'));
//add <title> element to <book>
$title = $book->appendChild($dom->createElement_x_x ('title'));
//add <title> text node element to <title>
$title->appendChild($dom->createTextNode('Great American Novel'));
//generate xml
$dom->formatOutput = true; // set the formatOutput attribute of domDocument to true
//save XML as string or file
$test1 = $dom->saveXML(); // put string in test1
$dom -> save('test1.xml'); // save as file
?>
实例二：
代码如下:
$aa = "111";
$xmlstr = <<<XML
<?xml version='1.0'?>
<document>
<title>{$aa}</title>
<from>Joe</from>
<to>Jane</to>
<body>
I know that's the answer -- but what's the question?
</body>
</document>
XML;
$dom = new domDocument;
$dom->loadXML($xmlstr);
$test1 = $dom->saveXML();
$dom->save('test1.xml');
实例三：
test1.xml:
代码如下:
<?xml version="1.0"?>
<books>
<book>
<author>Jack Herrington</author>
<title>PHP Hacks</title>
<publisher>O'Reilly</publisher>
</book>
<book>
<author>Jack Herrington</author>
<title>Podcasting Hacks</title>
<publisher>O'Reilly</publisher>
</book>
</books>
example.php:
代码如下:
$doc = new DOMDocument();
$doc->load('test1.xml');
$books = $doc->getElementsByTagName("book");
foreach($books as $book){
$authors = $book->getElementsByTagName("author");
$author = $authors->item(0)->nodeValue;
$publishers = $book->getElementsByTagName( "publisher" );
$publisher = $publishers->item(0)->nodeValue;
$titles = $book->getElementsByTagName( "title" );
$title = $titles->item(0)->nodeValue;
echo "$title - $author - $publisher/n";
}
二.使用simple生成和读取xml文件
实例一：
代码如下:
<?
$xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<books>
<book>
<title>Great American Novel</title>
<characters>
<character>
<name>Cliff</name>
<desc>really great guy</desc>
</character>
<character>
<name>Lovely Woman</name>
<desc>matchless beauty</desc>
</character>
<character>
<name>Loyal Dog</name>
<desc>sleepy</desc>
