A simple and practical HTML parsing class recently collected and written-php Tutorial

A simple and practical HTML parsing class recently collected and written

$ Xp = new xf_HtmlDom (); $ xp-> loadHtml ('http: // dealer.bitauto.com/100040078/cars.html'); $ rows = $ xp-> find ('dl/dd/', 0)-> innertext; print_r ($ rows ); $ OldSetting = libxml_use_internal_errors (true ); Libxml_clear_errors (); /** * *-+ ----------------------------------- * | PHP5 Framework-2011 * | Web Site: www. iblue. cc * | E-mail: mejinke@gmail.com * | Date: 2012-10-12 *-+ ----------------------------------- * * @ Desc HTML parser * @ Author jingke */ Class XF_HtmlDom { Private $ _ xpath = null; Private $ _ nodePath = ''; Public function _ construct ($ xpath = null, $ nodePath = '') { $ This-> _ xpath = $ xpath; $ This-> _ nodePath = $ nodePath; } Public function loadHtml ($ url) { Ini_set ('User _ agent', 'mozilla/5.0 (Linux; U; Android 2.1; en-us; Nexus One Build/ERD62) AppleWebKit/530.17 (KHTML, like Gecko) version/4.0 Mobile Safari/530.17-Nexus '); $ Content = ''; If (strpos (strtolower ($ url), 'http ') ===false) { $ Content = file_get_contents ($ url ); } Else { $ Ch = curl_init (); $ User_agent = "Baiduspider + (+ http://www.baidu.com/search/spider.htm )"; $ User_agent1 = 'mozilla/5.0 (Windows NT 5.1; rv: 6.0) Gecko/20100101 Firefox/123456 '; Curl_setopt ($ ch, CURLOPT_URL, $ url ); Curl_setopt ($ ch, CURLOPT_HEADER, false ); Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1 ); Curl_setopt ($ ch, CURLOPT_REFERER, $ url ); Curl_setopt ($ ch, CURLOPT_USERAGENT, $ user_agent1 ); Curl_setopt ($ ch, CURLOPT_FOLLOWLOCATION, 1 ); $ Content = curl_exec ($ ch ); Curl_close ($ ch ); } $ Html = new DOMDocument (); $ Html-> loadHtml ($ content ); $ This-> _ xpath = new DOMXPath ($ html ); Return $ this; } Public function find ($ query, $ index = null) { If ($ this-> _ nodePath = '') $ This-> _ nodePath = '//'; Else $ This-> _ nodePath. = '/'; $ Nodes = $ this-> _ xpath-> query ($ this-> _ nodePath. $ query ); If ($ index = null &&! Is_numeric ($ index )) { $ Tmp = array (); Foreach ($ nodes as $ node) { $ Tmp [] = new XF_HtmlDom ($ this-> _ xpath, $ node-> getNodePath ()); } Return $ tmp; } Return new XF_HtmlDom ($ this-> _ xpath, $ this-> _ xpath-> query ($ this-> _ nodePath. $ query)-> item ($ index)-> getNodePath ()); } /** * Get content */ Public function text () { If ($ this-> _ nodePath! = ''& $ This-> _ xpath! = Null) Return $ this-> _ xpath-> query ($ this-> _ nodePath)-> item (0)-> textContent; Else Return false; } /** * Get attribute values */ Public function getAttribute ($ name) { If ($ this-> _ nodePath! = ''& $ This-> _ xpath! = Null) Return $ this-> _ xpath-> query ($ this-> _ nodePath)-> item (0)-> getAttribute ($ name ); Else Return false; } Public function _ get ($ name) { If ($ name = 'innertext ') Return $ this-> text (); Else Return $ this-> getAttribute ($ name ); } }