php实现的xml操作类

本文实例讲述了php实现的xml操作类。分享给大家供大家参考，具体如下：

<?php/*使用方法:$test=new xml();$test->new_xml('test.xml');$test->root('document');$test->append_root_node('book');$test->append_child_node('author','linage');$test->append_child_node('page',100);$test->append_child_node('money','35 RMB');$test->append_root_node_end();$test->append_root_node('book','name','The"Web"Servers');$test->append_child_node('a u t ho"r','li n a g e');$test->append_child_node('page',100);$test->append_child_node('money','35 RMB');$test->append_root_node_end();$test->display();$test->save();生成的xml结果:<?xml version="1.0" encoding="utf-8"?><document><book><author>linage</author><page>100</page><money>35 RMB</money></book><book name="TheWebServers"><author>li n a g e</author><page>100</page><money>35 RMB</money></book></document>*/class xml{var $version;var $encoding;var $start;var $end;var $filename;var $xml_document;var $root_start;var $root_end;var $rss_start;var $rss_end;function xml($ver='1.0',$encoding='GB2312'){ $this->version="<?xml version=/"{$ver}/" encoding=/"{$encoding}/" standalone=/"yes/" ?>"; $this->rss_start="<rss version=/"2.0/" xmlns:domxml=/"[url]http://xml.666life.com/rss/1.0[/url]/" xmlns:geo=/"[url]http://www.w3.org/2003/01/geo/wgs84_pos#[/url]/">"; $this->rss_end="</rss>";}function new_xml($filename){ $this->filename=$filename; return true;}function root($element){ $element=$this->filter($element); if(isset($this->start) and isset($this->end)){ exit("error:Only one top level element is allowed in an XML document./r/n"); }else{ $this->start="<$element>"; $this->end="</$element>"; $this->xml_document=$this->version."/n".$this->rss_start."/n".$this->start."/n"; return true; }}function append_root_node($title,$property=null,$pro_val=null){ $title=$this->filter($title); $property=$this->filter($property); $pro_val=$this->filter($pro_val); $property!=null?$pro_str=" $property=/"$pro_val/"":$property=null; $contents="<{$title}{$pro_str}>/n"; $this->xml_document.=$contents; $this->root_end="</$title>"; return true;}function append_root_node_end(){ $this->xml_document.=$this->root_end."/n"; return true;}function append_child_node($title='undefined',$contents='undefined',$property=null,$pro_val=null,$cddate=false){ isset($property)?$pro_str=" $property=/"$pro_val/"":$property=null; $title=$this->filter($title); $contents=$this->filter($contents,false); $property=$this->filter($property); $pro_val=$this->filter($pro_val); $cddate===false?$cddate=false:$cddate=true; if($cddate){ $contents="<{$title}{$pro_str}><!--[CDATA['/n$contents/n']]--></$title>/n"; }else{ $contents="<{$title}{$pro_str}>$contents</$title>"; } $this->xml_document.=$contents."/n"; return true;}function display(){ header("Content-type: text/xml"); $xml=$this->xml_document.$this->end."/n".$this->rss_end; echo $xml; //return true;}function filter($sring,$replace_null=true){ $filter[]='"'; $filter[]="//"; $filter[]="/n"; $filter[]="/r"; $filter[]="/t"; $replace_null===true?$filter[]=" ":$replace_null=false; foreach ($filter as $val){ $sring=str_replace($val,'',$sring); } return $sring;}function encode(){ //you can add the convert encode function here or add other class to do that}function save(){ $this->xml_document=$this->xml_document.$this->end."/n".$this->rss_end; $handle=fopen($this->filename,'wb+'); $result=fwrite($handle,$this->xml_document); fclose($handle); if($result){ return true; }else{ echo "error:can't write to files,maybe the access denied.try to chmod 777 the directory?"; return false; }}}