php中DOMDocument简单用法示例代码(XML创建、添加、删除、修改) |
本文标签:php,DOMDocument 共分四个文件,分别是创建、增加、删除、修改四个功能,变量都是写死的,改一改用$_POST方式接收就可以用了 //index.php 创建功能 复制代码 代码如下: <?php $xmlpatch = index.xml; $_id = 1; $_title = title1; $_content = content1; $_author = author1; $_sendtime = time1; $_htmlpatch = 1.html; jb51.net$doc = new DOMDocument(1.0, utf-8); $doc -> formatOutput = true; jb51.net$root = $doc -> createElement(root);//新建节点 jb51.net$index = $doc -> createElement(index);//新建节点 jb51.net$url = $doc -> createAttribute(url);//新建属性 $patch = $doc -> createTextNode($_htmlpatch);//新建TEXT值 $url -> appendChild($patch);//将$patch文本设为$url属性的值 jb51.net$id = $doc -> createAttribute(id); $newsid = $doc -> createTextNode($_id); $id -> appendChild($newsid); jb51.net$title = $doc -> createAttribute(title); $newstitle = $doc -> createTextNode($_title); $title -> appendChild($newstitle); jb51.net$content = $doc -> createTextNode($_content);//节点值 jb51.net$author = $doc -> createAttribute(author); $newsauthor = $doc -> createTextNode($_author); $author -> appendChild($newsauthor); jb51.net$sendtime = $doc -> createAttribute(time); $newssendtime = $doc -> createTextNode($_sendtime); $sendtime -> appendChild($newssendtime); jb51.net$index -> appendChild($id);//将$id设为index节点的属性,以下类同 $index -> appendChild($title); $index -> appendChild($content); $index -> appendChild($url); $index -> appendChild($author); $index -> appendChild($sendtime); jb51.net$root -> appendChild($index);//设置index为root字节点 jb51.net$doc -> appendChild($root);//设置root为跟节点 jb51.net$doc -> save($xmlpatch);//保存文件 jb51.netecho $xmlpatch . has create success; jb51.net?> jb51.net<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>XML操作</title> </head> jb51.net<body> </body> </html> //add.php 增加功能(跟index.php文件差不多,主要就是加个load载入跟 $root = $doc -> documentElement获得跟节点 复制代码 代码如下: <?php $xmlpatch = index.xml; $_id = 2; $_title = title2; $_content = content2; $_author = author2; $_sendtime = time2; $_htmlpatch = 2.html; jb51.net$doc = new DOMDocument(); $doc -> formatOutput = true; if($doc -> load($xmlpatch)) { $root = $doc -> documentElement;//获得根节点(root) $index = $doc -> createElement(index); jb51.net$url = $doc -> createAttribute(url); $patch = $doc -> createTextNode($_htmlpatch); $url -> appendChild($patch); jb51.net$id = $doc -> createAttribute(id); $newsid = $doc -> createTextNode($_id); $id -> appendChild($newsid); jb51.net$title = $doc -> createAttribute(title); $newstitle = $doc -> createTextNode($_title); $title -> appendChild($newstitle); jb51.net$content = $doc -> createTextNode($_content); jb51.net$author = $doc -> createAttribute(author); $newsauthor = $doc -> createTextNode($_author); $author -> appendChild($newsauthor); jb51.net$sendtime = $doc -> createAttribute(time); $newssendtime = $doc -> createTextNode($_sendtime); $sendtime -> appendChild($newssendtime); jb51.net$index -> appendChild($id); $index -> appendChild($title); $index -> appendChild($content); $index -> appendChild($url); $index -> appendChild($author); $index -> appendChild($sendtime); jb51.net$root -> appendChild($index); jb51.net$doc -> save($xmlpatch); jb51.netecho $_id . has been added in . $xmlpatch; jb51.net} else { echo xml file loaded error!; } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>XML操作-添加</title> </head> jb51.net<body> </body> </html> //edit.php 修改功能(这里只修改title属性值 跟节点值) 复制代码 代码如下: <?php $xmlpatch = index.xml; $_id = 2; $_title = has been changed; $_content = has been changed; jb51.net$doc = new DOMDocument(); $doc -> formatOutput = true; jb51.netif($doc -> load($xmlpatch)) { $root = $doc -> documentElement; $elm = $root -> getElementsByTagName(index); $checkexist = 0; foreach ($elm as $new) { if($new -> getAttribute(id) == $_id) { $new -> setAttribute(title, $_title); $new -> nodeValue = $_content;//修改节点值,真是太意外了,没想到跟JS一样直接能赋值... //$new -> removeChild($new -> nodevalue); $checkexist = 1; } } if($checkexist == 0) { echo $_id . is not found in . $xmlpatch; } else { $doc -> save($xmlpatch); echo $_id . has been changed; } } else { echo xml file loaded error!; } jb51.net?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>XML操作-修改</title> </head> jb51.net<body> </body> </html> //del.php 删除功能 复制代码 代码如下: <?php $xmlpatch = index.xml; $_id = 2; jb51.net$doc = new DOMDocument(); $doc -> formatOutput = true; if($doc -> load($xmlpatch)) { $root = $doc -> documentElement; $elm = $root -> getElementsByTagName(index); foreach ($elm as $new) { if($new -> getAttribute(id) == $_id) { if($root -> removeChild($new)) { echo $_id . has been deleted; } else { echo $_id . delete failed; } } } $doc -> save($xmlpatch); } else { echo xml file loaded error!; } jb51.net?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>XML操作-删除</title> </head> jb51.net<body> </body> </html> jb51.net 总结一下,创建跟添加主要用的就是create跟appendChild,create后边跟Element就是创建节点,跟Attribute就是创建属性,TextNode就是创建值,然后appendChild就是设置从属关系,这么一看非常简单 。删除与修改都是用先获得节点列表getElementsByTagName然后foreach遍历想要修改的节点. |