名站导航为爱好php程序的朋友们提供php相关的教程知识。
XML文件一般情况下用来保存网站的数据信息，比如网站会员信息等。XML文件数据在整个网站中可能要用于程序中。所以，用PhP程序来读取XML文件中的数据是一个PhP程序程序员必备的知识。上一篇文章我们有介绍PhP程序读取XML文件中的数据，这里我们来看一个PhP程序读取XML文件的具体实例操作。
下面是XML文件具体代码如下：
library.xml：
<?xml version="1.0" encoding="gb2312"?> <root> <groups> <group gid="1">super</group> <group gid="2">admin</group> <group gid="3">change</group> <group gid="4">program</group> </groups> <users> <user> <name>Apache 2</name> <author>Peter Wainwright</author> <publisher>Wrox</publisher> <group>1</group> </user> <user> <name>Advanced PhP程序 Programming</name> <author>George Schlossnagle</author> <publisher>Developer Library</publisher> <group>1</group> <group>3</group> </user> <user> <name>Visual FoxPro 6 - Programmers Guide</name> <author>Eric Stroo</author> <publisher>Microsoft Press</publisher> <group>2</group> </user> <user> <name>Mastering Java 2</name> <author>John Zukowski</author> <publisher>Sybex</publisher> <group>4</group> </user> </users> </root>
readlibrary.php：
<?php
$xml = new DOMDocument('1.0');
$xml->load( 'library.xml' );
$groups = array();
$XMLGroups = $xml->getElementsByTagName('groups')->item(0);
foreach($XMLGroups->getElementsByTagName('group') as $groupNode) {
/*注意我们是如何得到属性的*/
$gid = $groupNode->getAttribute('gid');
$groups[$gid] = $groupNode->firstChild->nodeValue;
}
?>
<html>
<head>
<title>XML Library</title>
</head>
<body>
<?
foreach($xml->getElementsBytagName('user') as $user):
$name = $user->getElementsByTagName('name')->item(0)->firstChild->nodeValue;
$author = $user->getElementsByTagName('author')->item(0)->firstChild->nodeValue;
$userCategories = $user->getElementsByTagName('group');
$catList = '';
foreach($userCategories as $category) {
$catList .= $groups[$category->firstChild->nodeValue] . ', ';
}
$catList = substr($catList, 0, -2); ?>
<!--
<div>
<h2><?php echo($name) ?></h2>
<b>Author:</b>: <?php echo($author) ?></br>
<b>group: </b>: <?php echo($catList) ?></br>
</div>
-->
<?php
//echo($name ." - " . $author. " - ". $catList ."<br>\n" );
echo($name ." || " . $catList ."<br>\n" );
endforeach; ?>
</html>
writelibrary.php:
<?php
$doc = new DOMDocument();
$doc->formatOutput = true;
$r = $doc->createElement( "root" );
$doc->appendChild( $r );
setGroup();
setUser();
echo $doc->saveXML();
$doc->save("book1.xml");
function setGroup()
{
global $doc, $r;
$groups = array();
$groups [] = array(
'id' => '1',
'name' => 'Jack',
);
$groups [] = array(
'id' => '2',
'name' => 'herrington',
);
$groups [] = array(
'id' => '3',
'name' => 'hello',
);
$b = $doc->createElement( "groups" );
foreach( $groups as $group )
{
$grp = $doc->createElement( "group" );
$grp->appendChild( $doc->createTextNode( $group['name'] ) );
// create attribute node
$id = $doc->createAttribute("gid");
$grp->appendChild($id);
$idValue = $doc->createTextNode( $group['id'] );
$id->appendChild($idValue);
$b->appendChild( $grp );
}
$r->appendChild( $b );
}
function setUser()
{
global $doc, $r;
$users [] = array(
'title' => 'PhP程序 hacks',
'author' => 'Jack herrington',
'publisher' => "O'Reilly"
);
$users [] = array(
'title' => 'Podcasting hacks',
'author' => 'Jack herrington',
'publisher' => "O'Reilly"
);
$u = $doc->createElement( "users" );
$doc->appendChild( $u );
foreach( $users as $user )
{
$b = $doc->createElement( "user" );
$author = $doc->createElement( "author" );
$author->appendChild( $doc->createTextNode( $user['author'] ) );
$b->appendChild( $author );
$title = $doc->createElement( "title" );
$title->appendChild( $doc->createTextNode( $user['title'] ) );
$b->appendChild( $title );
$publisher = $doc->createElement( "publisher" );
$publisher->appendChild( $doc->createTextNode( $user['publisher'] ) );
$b->appendChild( $publisher );
$u->appendChild( $b );
}
$r->appendChild( $u );
}
?>
好了关于php程序的知识就说到这里希望可以帮助需要的朋友。,使用PhP程序生成XML文件具体代码如下
XML文件在一个网站中可以说是必不可少的，PhP程序将数据保存到XML文件都要对XML文件的操作。例如，打开XML文件、将数据写入XML文件等，这里我们使用PhP程序来生成我们想要的XML文件具体实例操作具体代码如下。
