自定义php类(查找/修改)xml文档_php技巧

近期在看PHP的教学视频，其中讲到了 PHP 操作 xml 文档，学了点儿 DOMDocument 类。自己查手册又全英文，看不大懂。但还是自己写了个类，实现了查找 xml 节点，并修改节点值。背景解说完毕，且看代码如下：

 <BR>/* <BR><?xml version="1.0" encoding="UTF-8"?> <BR> <BR> <BR>孙悟空 <BR>孙行者 <BR>猴精猴精 <BR> <BR> <BR> <BR>白骨精 <BR>140 <BR>幻化万千 <BR> <BR> <BR>猪八戒 <BR>猪无能 <BR>200 <BR>能吃会睡 <BR> <BR> <BR>*/ <BR>class xmlDom{ <BR>public $version; <BR>public $encoding; <BR>private $xm<strong style="color:transparent">本文来源gao@daima#com搞(%代@#码@网&</strong><strong>搞gaodaima代码</strong>l; <BR>private $items; <BR>private $seachNode = ''; <BR>private $seachItem = ''; <BR>private $seachValue = ''; <BR>public $writeBytes = 0; <BR>function __construct($xmlFile ='', $version ='1.0', $encoding = 'UTF-8'){ <BR>$this->version = $version; <BR>$this->encoding = $encoding; <BR>$this->xml = new DOMDocument($version, $encoding); <BR>if($xmlFile)$this->xml->load($xmlFile); <BR>} <BR>function getRootEle($rootTag){ <BR>$this->xmlRoot = $this->xml->getElementsByTagName($rootTag)->item(0); <BR>} <BR>function getSeachItem($itemsTag, $seachNode, $seachValue){ <BR>$this->items = $this->xml->getElementsByTagName($itemsTag); <BR>$this->items->length; <BR>for($i=0; $iitems->length; $i++){ <BR>$item = $this->items->item($i);//元素 <BR>$node = $item->getElementsByTagName($seachNode);//节点 <BR>for($j = 0; $jlength; $j++){ <BR>$subNode = $node->item($j); <BR>if($seachValue == $subNode->nodeValue){ <BR>$this->seachNode = $subNode; <BR>$this->seachItem = $item; <BR>$this->seachValue = $subNode->nodeValue; <BR>break(2); <BR>} <BR>} <BR>} <BR>return ($this->seachNode) ? true : false; <BR>} <BR>function update($nodeValue, $nodeTag = '',$append = false, $index = 0){ <BR>if($append){ <BR>if($nodeTag) <BR>$this->seachItem->getElementsByTagName($nodeTag)->item($index)->nodeValue += $nodeValue; <BR>else <BR>$this->seachNode->nodeValue += $nodeValue; <BR>}else{ <BR>if($nodeTag) <BR>$this->seachItem->getElementsByTagName($nodeTag)->item($index)->nodeValue = $nodeValue; <BR>else <BR>$this->seachNode->nodeValue = $nodeValue; <BR>} <BR>} <BR>function save($filename){ <BR>$this->writeBytes = $this->xml->save($filename); <BR>return ($this->writeBytes) ? true : false; <BR>} <BR>} <BR>$test = new xmlDom('student.xml'); <BR>$test->getSeachItem('学生','年龄','103');//找到 年龄=103 的猪八戒 <BR>$test->update('小猪猪', '名字', false, 1); //把猪八戒的第二个名字改成：小猪猪 <BR>$test->save('new.xml'); //保存成新文件 <BR>

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