本文實例講述了php實現的xml操作類。分享給大家供大家參考，具體如下：
<?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結果:
<?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;
}
}
}
更多關於PHP操作xml相關內容感興趣的讀者可查看本站專題：《PHP針對XML文件操作技巧總結》
希望本文所述對大家PHP程序設計有所幫助。
