php解析xml方法实例详解
本文以实例形式详细讲述了php解析xml方法。分享给大家供大家参考。具体分析如下：
books.xml文件如下：
<?xml version="1.0" encoding="ISO-8859-1"?> <bookstore> <book category="children"> <title lang="en">Harry Potter</title> <author>J K. Rowling</author> <year>2005</year> <price>29.99</price> </book> <book category="cooking"> <title lang="en">Everyday Italian</title> <author>Giada De Laurentiis</author> <year>2005</year> <price>30.00</price> </book> <book category="web" cover="paperback"> <title lang="en">Learning XML</title> <author>Erik T. Ray</author> <year>2003</year> <price>39.95</price> </book> </bookstore>
1、DOM解析XML
<?php
//创建一个DOMDocument对象
$doc=new DOMDocument();
//加载XML文件
$doc->load("books.xml");
//获取所有的book标签
$bookDom=$doc->getElementsByTagName("book");
foreach($bookDom as $book){
$title = $book->getElementsByTagName("title")->item(0)->nodeValue;
$author = $book->getElementsByTagName("author")->item(0)->nodeValue;
$year = $book->getElementsByTagName("year")->item(0)->nodeValue;
$price = $book->getElementsByTagName("price")->item(0)->nodeValue;
echo "title：".$title."<br>";
echo "author：".$author."<br>";
echo "year：".$year."<br>";
echo "price：".$price ."<br>";
echo "***********************************<br>";
}
?>
2、xml_parse_into_struct
创建解析器，将xml数据解析到数组，释放解析器，再有就是从数组中提取想要的值。
<?php
// 读取xml文件
$file = "books.xml";
$data = file_get_contents($file);
// 创建解析器
$parser = xml_parser_create();
// 将 XML 数据解析到数组中
xml_parse_into_struct($parser, $data, $vals, $index);
// 释放解析器
xml_parser_free($parser);
// 数组处理
$arr = array();
$t=0;
foreach($vals as $value) {
$type = $value['type'];
$tag = $value['tag'];
$level = $value['level'];
$attributes = isset($value['attributes'])?$value['attributes']:"";
$val = isset($value['value'])?$value['value']:"";
switch ($type) {
case 'open':
if ($attributes != "" || $val != "") {
$arr[$t]['tag'] = $tag;
$arr[$t]['attributes'] = $attributes;
$arr[$t]['level'] = $level;
$t++;
}
break;
case "complete":
if ($attributes != "" || $val != "") {
$arr[$t]['tag'] = $tag;
$arr[$t]['attributes'] = $attributes;
$arr[$t]['val'] = $val;
$arr[$t]['level'] = $level;
$t++;
}
break;
}
}
echo "<pre>";
print_r($arr);
echo "</pre>";
?>
3、用 SAX 解析器读取 XML-----XML Simple API（SAX）解析器
<?php $file="books.xml"; $xml = simplexml_load_file($file); echo "<pre>"; print_r($xml); echo "</pre>"; ?>
希望本文所述对大家的php程序设计有所帮助。
