Listing 1416

    /**
     * constructs the element
     * @param string $docType 
     * @param string $encoding
     * @param string $name optional name
     * @return GLB_Document_DocType
     */
    public function __construct($docType, $encoding='UTF-8', $name=''){
        $this->_encoding = $encoding;
        $this->_docType = $docType;
        $this->_name = $name;
        
        foreach (glob("Element/*.php") as $filename) {
            require_once($filename);
        }
        
        $this->getDOM('dom.xml');
        
        if(!file_exists($docType)) trigger_error($docType . ' is not a valid docType', E_USER_ERROR);
        $this->_docType = $docType;
        switch(strtolower($docType)){
            case 'xcsxml':
                require_once('xcsXML.php');
                $obj = new GLB_Document_xcsXML($this);
                break;
            case 'html':
                require_once('HTML.php');
                $obj = new GLB_Document_HTML($this);
                break;
        }
        return $obj;
    }
    
    function setDocType($docType){
        if(!file_exists($docType)) trigger_error($docType . ' is not a valid docType', E_USER_ERROR);
        switch(strtolower($docType)){
            case 'xcsxml':
                require_once('xcsXML.php');
                $obj = new GLB_Document_xcsXML($this);
                break;
            case 'html':
                require_once('HTML.php');
                $obj = new GLB_Document_HTML($this);
                break;
        }
        return $obj;
    }
 
##################################################################
 
$doc = new GLB_Document('HTML');
echo '1: '.get_class($doc).'<br/>';
echo '2: '.get_class($doc->setDocType('HTML'));
 
OUTPUT: ##########################################################
 
1: GLB_Document
2: GLB_Document_HTML