使用PHP5 DOM-XML创建和解析XML文件

haidong · 发表于 2010-2-24 13:44:10

<DIV class=content><

>先用PHP5创建一个xml文件</P><

RE><?php$dom = new DomDocument("1.0");$root = $dom ->createElement("html");$title = $dom -> createElement("title");$meta = $dom -> createElement("meta");$head = $dom -> createElement("head");$titleText = $dom -> createTextNode("this is a title");$metaText = $dom -> createTextNode("this is a meta");$table = $dom -> createElement("table");$tr = $dom -> createElement("tr");$td = $dom -> createElement("td");$tdText = $dom -> createTextNode("words");$root = $dom -> appendChild($root);$head = $root -> appendChild($head);$title = $head -> appendChild($title);$meta = $head -> appendChild($meta);$comment = $title -> appendChild($titleText);$meta -> appendChild($metaText);$td -> appendChild($tdText);$tr -> appendChild($td);$table -> appendChild($tr);$root -> appendChild($table);$dom -> save("test5.xml");echo "<HR><A href='\"test5.xml\"'>查看test5.xml</A>";?></PRE><

>test5.xml</P><

RE><?xml version="1.0"?><HTML><HEAD><META>this is a meta</META><TABLE><TBODY><TR><TD>words</TD></TR></TBODY></TABLE></PRE><

>解析test5.xml</P><

RE><?php//首先要创建一个DOMDocument对象$dom = new DomDocument("1.0");//然后载入XML文件$dom -> load("test5.xml");//向DOM中写入新数据$tr = $dom -> createElement("tr");$td = $dom -> createElement("td");$tdText = $dom -> createTextNode("hello world");$td -> appendChild($tdText);$tr -> appendChild($td);$dom -> documentElement -> getElementsByTagName("table") -> item(0) -> appendChild($tr);//向DOM中写入新数据$tr2 = $dom -> createElement("tr");$td2 = $dom -> createElement("td");$tdText2 = $dom -> createTextNode("hello world too");$td2 -> appendChild($tdText2);$tr2 -> appendChild($td2);$xpath = new domxpath($dom);$trs = $xpath -> query("/html/table");$trs -> item(0) -> appendChild($tr2);$dom -> save("newfile.xml");echo "<HR><A href='\"newfile.xml\"'>查看newfile.xml</A>";print "<HR>取得所有的td元素<BR>";$tds = $dom -> getElementsByTagName("td");foreach ($tds as $nodes){ print $nodes -> textContent."<BR>";}echo "<HR>使用XPath查询的td节点结果:<HR>";$tdss = $xpath -> query("/html/table/tr");foreach ($tdss as $nodes){ print $nodes -> textContent."<BR>";}?></PRE></DIV>

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使用PHP5 DOM-XML创建和解析XML文件

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