[phpXML] Basic question about xpath.class.php use

[<lu...@sa...>]

Hello,

I've some problems with xpath.class.php use and the new system
The following piece of code works perfectly with xml.php 1N4 but no more 
with xpath.class.php

xpath.class.php version is at :
http://www.interpasnet.com/xmlprocess.xpath.php?screen=cachecache&section=cachecache&file=cachecache.xml&id=1

xml.php 1N4 version is at
http://www.interpasnet.com/xmlprocess.php?screen=cachecache&section=cachecache&file=cachecache.xml&id=1

Error is :
phpXML error: While parsing an XPath expression there was an error in the 
predicate "1", because it was the null string. If you wish to seach for the 
empty string, you must use ''.


What am I supposed to change ?

Luc

================== BEGIN ============================
$xml_file = 'xml_files/'.$section.'/'.$file;

if ($file =="cachecache.xml"){
$xml_data = $tpl->fetch('../'.$xml_file);
$xml = new XPath();
$xml->load_string ($xml_data);
         } else {
            $xml = new XPath($xml_file);
            }

$array_article_entete= array();
$array_article_corps= array();
$array_article_listing = array();
$t = array();
$articles = $xml->evaluate('/article');
foreach ( $articles as $article ) {
         $category                       = 
$xml->get_content($article.'/category[1]');
         $version                        = 
$xml->get_content($article.'/version[1]');
         $source_url             = 
$xml->get_content($article.'/source[1]/url[1]');
         $source_livre           = 
$xml->get_content($article.'/source[1]/livre[1]');
         $source_commentaire     = 
$xml->get_content($article.'/source[1]/commentaire[1]');
         $copyright                      = 
$xml->get_content($article.'/copyright[1]');
         $author_name            = 
$xml->get_content($article.'/author[1]/name[1]');
         $author_adress_name     = 
$xml->get_content($article.'/author[1]/adress[1]/name[1]');
         $author_adress_phone= 
$xml->get_content($article.'/author[1]/adress[1]/phone[1]');
         $author_email           = 
$xml->get_content($article.'/author[1]/email[1]');
         $title                          = 
$xml->get_content($article.'/title[1]');
         $abstract                       = 
$xml->get_content($article.'/abstract[1]');

         array_push ($array_article_entete,
                         array(  'category'              =>$category,
                                         'version'               =>$version,
                                         'source_url'    =>$source_url,
                                         'source_livre'  =>$source_livre,
                                         'source_commentaire'=>$source_commentaire,
                                         'copyright'             =>$copyright,
                                         'author_name'   =>$author_name,
                                         'author_adress_name' 
=>$author_adress_name,
                                         'author_adress_phone' 
=>$author_adress_phone,
                                         'author_email'  =>$author_email,
                                         'article_title' =>$title,
                                         'abstract'              =>$abstract
                                 )
                 );
}

if ( !empty($id) ) {
         $blocs = $xml->evaluate('//paragraph[@id='.$id.']');
                 } else {

$blocs = $xml->evaluate('/article/paragraph');

}

foreach ( $blocs as $bloc ) {
         $t = $xml->get_attributes( $bloc);
         $id  = $t['id'];
         $title  = $xml->get_content($bloc.'/title[1]');
         $chapo  = $xml->get_content($bloc.'/chapo[1]');
         $text  = $xml->get_content($bloc.'/text[1]');

         array_push($array_article_corps,
                                         array('paragraph_id'=>$id,
                                                 'paragraph_title'=>$title,
                                                 'paragraph_chapo'=>$chapo,
                                                 'paragraph_text'=>$text
                                         )
                                 );
}


$blocs = $xml->evaluate('/article/paragraph');

foreach ( $blocs as $bloc ) {
         $t = $xml->get_attributes( $bloc);
         $id  = $t['id'];
         $title  = $xml->get_content($bloc.'/title[1]');
         array_push($array_article_listing,
                                         array('paragraph_id'=>$id,
                                                 'paragraph_title'=>$title
                                         )
                                 );
}
====================== END ===========================

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