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File: extract_valid_xml_data.php

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  Classes of Manuel Lemos  >  Generic XML parser class  >  extract_valid_xml_data.php  >  Download  
File: extract_valid_xml_data.php
Role: Example script
Content type: text/plain
Description: Example of how to validate and extract data from a XML document
Class: Generic XML parser class
Arbitrary XML parser.
Author: By
Last change:
Date: 2012-09-05 03:29
Size: 1,818 bytes
 

Contents

Class file image Download
<?php
/*
 * extract_valid_xml_data.php
 *
 * @(#) $Id: extract_valid_xml_data.php,v 1.2 2012/09/04 10:08:03 mlemos Exp $
 *
 */

?><html>
<head>
<title>Validate and extract data from XML document</title>
</head>
<body>
<h1 align="center">Validate and extract data from XML document</h1>
<hr>
<?php
    require('xml_parser.php');

    $file_name = 'example.xml';
    $error = XMLParseFile($parser, $file_name, 1, $file_name.'.cache');
    if(strlen($error) == 0)
    {
        /*
         * The types array defines the types and structure of the document
         * to be validated before extracting its data values.
         */ 
        $content_types = array(
            'CONTENTS'=>array(
                'type'=>'hash',
                'types'=>array(
                    'OBJECT'=>array(
                        'type'=>'hash',
                        /* allow tag to appear an unlimited number of times */
                        'maximum'=>'*',
                        'types'=>array(
                            'NAME'=>array(
                                /* The default maximum and minimum times is 1 for required tags */
                                'type'=>'text',
                            ),
                            'CLASS'=>array(
                                'type'=>'text',
                            ),
                            'ATTRIBUTES'=>array(
                                'type'=>'path',
                                /* make it optional by not requiring a minimum number of times to appear */
                                'minimum'=>0,
                            ),
                        )
                    )
                )
            )
        );
        $root_path = '';
        $root_element = 'CONTENTS';
        $hash = 1;
        $error = $parser->ExtractElementData($root_path, $root_element, $content_types, $hash, $contents);
    }

    if(strlen($error))
        echo '<h2 align="center">Parser error: ', $error, '</h2>';
    else
    {
        echo '<h2  align="center">Extracted data structure</h2>';
        echo '<p>This example dumps the structure and values of the XML file.</p>';
        echo '<pre>';
        /*
         * The resulting associative array has the tag names and values
         * that were found and validated in the XML document
         */
        var_dump($contents);
        echo '</pre>';
    }
?></body>
</html>