Php XML file interpretation application example

This article mainly introduces php's XML file interpretation class and its application examples, including reading, interpreting, checking, and outputting XML files. it is very practical, you can refer to the example in this article to describe the php XML file interpretation class and its usage, which is a very practical technique. Share it with you for your reference. The details are as follows:

The XMLParser. class. php class file is as follows:

<? Php/** XML file analysis class * Date: 2013-02-01 * Author: fdipzone * Ver: 1.0 ** func: * loadXmlFile ($ xmlfile) read xml file output Array * loadXmlString ($ xmlstring) read the xmlstring output Array */class XMLParser {/** read the xml file * @ param String $ xmlfile * @ return Array */public function loadXmlFile ($ xmlfile) {// get xmlfile content $ xmlstring = file_exists ($ xmlfile )? File_get_contents ($ xmlfile): ''; // parser xml list ($ flag, $ data) = $ this-> parser ($ xmlstring ); return $ this-> response ($ flag, $ data);}/** read xmlstring * @ param String $ xmlstring * @ return Array */public function loadXmlString ($ xmlstring) {// parser xml list ($ flag, $ data) = $ this-> parser ($ xmlstring); return $ this-> response ($ flag, $ data );} /** interpret xml content * @ param String $ xmlstring * @ return Array */ Private function parser ($ xmlstring) {$ flag = false; $ data = array (); // check xml format if ($ this-> checkXmlFormat ($ xmlstring )) {$ flag = true; // xml to object $ data = simpleXML_load_string ($ xmlstring, 'simplexmlelement', LIBXML_NOCDATA ); // object to array $ this-> objectToArray ($ data);} return array ($ flag, $ data );} /** check whether the xml format is correct * @ param String $ xmlstring * @ return boolean */private function CheckXmlFormat ($ xmlstring) {if ($ xmlstring = '') {return false;} $ xml_parser_obj = xml_parser_create (); if (xml_parse_into_struct ($ xml_parser_obj, $ xmlstring, $ vals, $ indexs) === 1) {// 1: success 0: fail return true;} else {return false ;}} /** convert object to Array * @ param object $ object * @ return Array */private function objectToArray (& $ object) {$ object = (array) $ object; foreach ($ object as $ key => $ value) {If ($ value = '') {$ object [$ key] =" ";} else {if (is_object ($ value) | is_array ($ value )) {$ this-> objectToArray ($ value); $ object [$ key] = $ value ;}}}/** output returns * @ param boolean $ flag true: false * @ param Array $ data converted data * @ return Array */private function response ($ flag = false, $ data = array () {return array ($ flag, $ data) ;}}?>

The Demo sample program is as follows:

<?php require "XMLParser.class.php";  $xmlfile = 'file.xml'; $xmlstring = '<?xml version="1.0" encoding="utf-8"?> 
  
  
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 '; echo '
'; $xml_parser = new XMLParser(); echo "response xmlfile\r\n"; list($flag, $xmldata) = $xml_parser->loadXmlFile($xmlfile); if($flag){   print_r($xmldata); } echo "response xmlstring\r\n"; list($flag, $xmldata) = $xml_parser->loadXmlString($xmlstring); if($flag){   print_r($xmldata); } echo '
'; ?> 

For XML pre-defined constants in PHP, refer to the official documentation:
Http://www.php.net/manual/en/libxml.constants.php

I hope this article will help you learn PHP programming.