使用PHP DOM-XML创建和解析XML文件

haidong · 发表于 2010-2-24 13:44:08

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><?PHP /** * Topic: Create_and_parse XML files using PHP DOM-XML * Source: <A href="http://www.php.net/domxml">http://www.php.net/domxml</A> * Reference: <A href="http://www.zugeschaut-und-mitgebaut.de/php/extension.domxml.html">http://www.zugeschaut-und-mitgebaut.de/php/extension.domxml.html</A> * Author: <A href="mailto:urs@circle.ch">urs@circle.ch</A>, 16-1-2001 * */ // 使用PHP DOM-XML创建和解析XML文件<

> //创建XML文档对象；以后的处理过程将在此基础上进行 $doc = new_xmldoc("1.0" ); <

> //创建根节点，并设置一个属性 $root = $doc->add_root("faq" ); $root->setattr("page", "32" ); <

> //子节点 $one = $root->new_child("question", ""); //为子节点设置属性 $one->setattr("number", "1"); //question也创建子节点，并且给它赋值 $one->new_child("text", "1. Where to get libxml-2.0.0?"); $one->new_child("answer", "You can download the latest release of libxml either as a source archive_or_ RPM package from <A href="http://www.xmlsoft.org">http://www.xmlsoft.org</A>. The current version is libxml2-2.2.1." ); <

> $two = $root->new_child("question", "" ); $two->setattr("number", "2"); $two->new_child("text", "2. How to configure PHP4?" ); // 创建一个不直接赋值的节点 $twoone = $two->new_child("answer", ""); // 然后给它单独赋值 $twoone->set_content("DIR is the libxml install directory (if you just use --with-dom it defaults to /usr), I needed to use --with-dom=/usr/local" ); <

> $three = $root->new_child("question", "" ); $three->setattr("number", "7" ); $three->new_child("text", "7. How to use DOM XML function ?" ); $three->new_child("answer", "Read this document source for a simple example." ); <

> //输出到Browser print("<pre>".htmlspecialchars($doc->dumpmem() )."</pre>" ); <

> // write to file //写回到文件 $fp = fopen("test_dom.xml", "w+" ); fwrite($fp, $doc->dumpmem(), strlen($doc->dumpmem() )); fclose($fp); <

> // ------------------------------------------------------ //现在使用XPath从XML文档中得到内容 $doc = xmldoc(join("", file("test_dom.xml")) ); $ctx = xpath_new_context($doc ); <

> //所有对象 $foo = xpath_eval($ctx, "//child::*"); print_r($foo); print(" "); //text node 对象 $foo = xpath_eval($ctx, "//text"); print_r($foo); print(" "); // 第一个text node对象 $foo = xpath_eval($ctx, "//text[1]"); print_r($foo); print(" "); // 第二个text node对象 $foo = xpath_eval($ctx, "//text[2]"); print_r($foo); print(" "); // 第三个answer对象 $foo = xpath_eval($ctx, "//answer[3]"); print_r($foo); print(" "); <

> //第三个text node的类型，名称和内容 $foo = xpath_eval($ctx, "//text[3]"); $tmp = $foo->nodeset; print_r($tmp); print(" "); print($tmp[0]->type) . "; "; print($tmp[0]->name) . "; "; print($tmp[0]->content); <

>?> <

>需要说明，PHP DOM 只能在PHP PHP4.0.x + Linux上运行<

>

HPDOM类库请到<A href="http://www.zend.com/download">www.zend.com/download</A>下载

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使用PHP DOM-XML创建和解析XML文件

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