Php-xml-based Blog System.

[whisher]

Vediamo se un po di codice vi stuzzica:

<?php
class XmlLoader {
    public $doc = null;
    public function __construct() {
          $this->doc = new DOMDocument();
    }
    public function loadXmlFile($fileName) {
        if(!is_file($fileName)){
            throw new Exception('Invalid file name ['.$fileName.']');
        }
        if(!$this->doc->load($fileName)) {
            throw new Exception('Error loading file ['.$fileName.']');
        }
        return new XmlParser($this->doc);
    }
}
class XmlParser
{
    public $doc = null;
    private $_item = '';
    public function __construct($doc) {
          $this->doc = $doc;
        $this->_item = 'item';
    }
    public function addElement($xmlBody) {
         $item = $this->doc->createElement($this->_item);
        foreach($xmlBody as $key => $value) {
            $nodespace = $this->doc->createElement($key);
            $nodetext = $this->doc->createTextNode($value);
            $nodespace->appendChild($nodetext);
            $item->appendChild($nodespace);
        }
        $this->doc->documentElement->appendChild($item);
    }
    public function getUpdatedValue($itemNum)
    {
        $values=array();
        $item = $this->doc->getElementsByTagName("item");
        if(is_null($selected=$item->item((int)$itemNum))) {
            throw new Exception('Error removing item ['.$itemNum.']');
        }
        foreach ($selected->childNodes as $elements) {
              if ($elements->nodeType == 1 ) {
                if($elements->firstChild->nodeType == 3) {
                    $values[] = $elements->firstChild->data;
                }
                }
        }
        return $values;

    }
    public function removeChild($itemNum)
    {
        $item = $this->doc->getElementsByTagName("item");
        if(is_null($item->item((int)$itemNum))) {
            throw new Exception('Error removing item ['.$itemNum.']');
        }
        $this->doc->documentElement->removeChild($item->item((int)$itemNum));
    }
    public function replaceChild($xmlBody,$itemNum)
    {
        $item = $this->doc->createElement($this->_item);
        foreach($xmlBody as $key => $value) {
            $nodespace = $this->doc->createElement($key);
            $nodetext = $this->doc->createTextNode($value);
            $nodespace->appendChild($nodetext);
            $item->appendChild($nodespace);
        }
        $root = $this->doc->documentElement;
        $selected = $root->getElementsByTagName("item");
        if(is_null($selected->item((int)$itemNum))) {
            throw new Exception('Error replacing item ['.$itemNum.']');
        }
        $oldnode = $selected->item((int)$itemNum);
        $newnode = $this->doc->importNode($item, true);
        $oldnode->parentNode->replaceChild($newnode, $oldnode);
    }
    public function save($fileName) {
        if(!$this->doc->save($fileName)){
             throw new Exception('Error saving file ['.$fileName.']');
        }
    }
    public function getItemElements()
    {
        $item=array();
        foreach ($this->doc->documentElement->childNodes as $elements) {
              if ($elements->nodeType == 1 ) {
                $item[] = $elements;
            }
        }
        return $item;
    }
    public function getNodesValue($item)
    {
        $values=array();
        foreach ($item->childNodes as $elements) {
              if ($elements->nodeType == 1 ) {
                if($elements->firstChild->nodeType == 3) {
                    $values[] = $elements->firstChild->data;
                }
                }
        }
        return $values;
    }
}//
?>

E un esempio di xml file:

<items>
    <item>
        <time>
        </time>
        <title>
        </title>
        <author>
        </author>
        <content>
        </content>
    </item>;
</items>