PHP使用DomDocument抓取HTML内容

<?php
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 $urlTarget = "http://www.xxxx.com/targethtmlpage.html";
require_once('ContentManager.php');
//建立Dom对象，分析HTML文件；
 $htmDoc = new DOMDocument;
 $htmDoc->loadHTMLFile($urlTarget );
 $htmDoc->normalizeDocument();
//获得到此文档中每一个Table对象；
 $tables_list = $htmDoc->getElementsByTagName('table');
//测试Table Count；
 $tables_count = $tables_list->length;
 foreach ($tables_list as $table)
 {
 //得到Table对象的class属性
 $tableProp = $table->getAttribute('class');
 if ($tableProp == 'target_table_class')
 {
 $contentMgr = new ContentManager();
 $contentMgr->ParseFromDOMElement($table);
//这里myParser就完成了分析动作。然后就可以进行需要的操作了。
 //比如写入MySQL。
 $contentMgr->SerializeToDB();
 }
 }
 ?>

<?php
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 * Description of ContentParser
 *
 * @author xxxxx
 */
 require_once('ContentInfo.php');
 class ContentManager {
 //put your code here
 var $ContentList;
 public function __construct() {
 $this->ContentList = new ArrayObject();
 }
public function ParseFromDOMElement(DOMElement $table)
 {
 $rows_list = $fundsTable->getElementsByTagName('tr');
 $rows_length = $rows_list->length;
 $index = 0;
foreach ($rows_list as $row)
 {
 $contentInfo = new ContentInfo();
 $contentInfo->ParseFromDOMElement($row);
 $this->ContentList->append ($contentInfo);
 }
//test how many contents parsed.
 $count = $this->fundsInfoArray->count();
 echo $count;
 }
public function SerializeToDB()
 {
 //写入数据库，代码略。
 }
 }
?>

<?php
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 * Description of ContentInfo
 *
 * @author xxxxx
 */
class ContentInfo {
    //put your code here
    var $ID;
    var $Name;
    var $Content;
    public function ParseFromDOMElement(DOMElement $row)
    {
        $cells_list = $row->getElementsByTagName('td');
        $cells_length = $row->length;
        $curCellIdx = 0;
        foreach ($cells_list as $cell)
        {
            switch ($curCellIdx++)
            {
                case 0:
                    $this->ID = $cell->nodeValue;
                    break;
                case 1:
                    $this->Name = $cell->nodeValue;
                    break;
                case 2:
                    $this->Content = $cell->nodeValue;
                    break;
            }
        }
    }
}
?>