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>"; ?>