Re: [PHP4BETA] Global Variables/XML

Hello Duncan, I was having similar problem, trying to build hierarchy XML tree using array. However, I managed to make it works using array's pop & push functions. I don't have the source codes here with me, but I can send you the classes, source codes, if you're interest. Here is a simple test: http://www.irisphoto.com/dev/xml If this's what you want to construct, let me know. Cheers, Ly Vuong --- Duncan Dickinson wrote: > > Hi all, > > I have been staring at a problem for quite a while now and admit > defeat. I apologise for the length of this posting but I feel I > probably just have a semantic error that I keep overlooking. > > I have an XML doc and want to place it into a 'tree' of XML Entities. > I use the expat libraries to walk the doc and place each > entity/element into a new instance of XML_Entity. This instance refers > back to its parent and also contains an array of child entities. The > basic XML I am using is displayed on the page included below. > > The problem is that the final tree shows all child nodes having > Element A as their parent, I think I'm stuffing up the global variable > as each call to startElement uses Element A and not the element set in > the previous call. > > I am using PHP 4.0RC1 (no Optimizer) on Apache 1.3.9 on Redhat Linux. > Anyone see anything? Maybe using domxml would be a better idea? > > Thanks in advance, > > duncan > > <?php > $current_entity; > > function XML_File_startElement($parser, $name, $attrs) { > global $current_entity; > echo "<li>The current element is named " . $current_entity->name; > echo "<ul>"; > if (empty($current_entity)) { > $current_entity = new XML_Entity($name); > echo "<li>Creating a new object named " . $current_entity->name; > } else { > echo "<li>Adding child to " . $current_entity->name . ". "; > $current_entity = &$current_entity->addChild($name); > echo "<li>Creating a child named " . $current_entity->name > . " with parent " . $current_entity->parent->name; > } > echo "<li>The current element is NOW named " . > $current_entity->name; > echo "</ul>"; > } > > function XML_File_endElement($parser, $name){ > global $current_entity; > echo "<li>Closing element " . $current_entity->name; > echo "<ul>"; > if (is_object($current_entity->parent)) { > echo "<li>Parent found. Moving to element " . > $current_entity->name; > $current_entity = &$current_entity->parent; > } else > echo "<li>No Parent Found"; > echo "</ul>"; > } > > class XML_Entity{ > var $name; > var $children = array(); > var $parent; > > function XML_Entity($name){ > $this->name = $name; > } > > function addChild($name) { > $child = new XML_Entity($name); > $child->parent = &$this; > $this->children[] = &$child; > return $child; > } > > function dumpEntity(){ > echo "<ul>"; > echo "<li><b>" . $this->name . "</b>n"; > echo "<ul>"; > if(is_object($this->parent)) > echo "<li>Parent Name: " . $this->parent->name; > echo "</ul>"; > echo "<li>Children:n"; > while(list($k, $v) = each($this->children)) > $v->dumpEntity(); > echo "</ul>"; > echo "<hr>"; > } > } > > class XML_File { > function XML_File(){ > } > > function loadFile($file) { > global $current_entity; > if(!file_exists($file)) > return false; > if (!($fp = fopen($file, "r"))) > return false; > $current_entity = ""; > $xml_parser = xml_parser_create(); > xml_set_element_handler($xml_parser, "XML_File_startElement", > "XML_File_endElement"); > while ($data = fread($fp, 4096)) { > if (!xml_parse($xml_parser, $data, feof($fp))) > return false; > } > return $current_entity; > } > } > ?> > > <h2>Test Page</h2> > <P>File Contents = > <pre> > <?php echo > htmlentities("<a><b><c></c></b></a>")?> > </pre> > > <?php > $x = new XML_File(); > $e = &$x->loadFile("/tmp/test.xml"); > echo "<br><h3>Dump of element tree</h3>"; > $e->dumpEntity(); > ?> > > -- > PHP 4.0 Beta Mailing List <http://www.php.net/version4/> > To unsubscribe, e-mail: php4beta-unsubscribe@lists.php.net > For additional commands, e-mail: php4beta-help@lists.php.net > To contact the list administrators, e-mail: php4beta-admin@lists.php.net