Re: DOM recursion

[Jochem Maas <jochem@xxxxxxxxxxxxx>]

Joanne Lane schreef:
> I am trying to create a class that recursively iterates over an array an
> creates XML tree to reflect a multidimensional array.
> I am not really a PHP coder, but am trying my hand.

I've seen 'real coders' write stuff thats leagues worse.

> This is what I have so far.
> http://pastie.org/private/w75vyq9ub09p0uawteyieq
> 
> I have tried a few methods, but I keep failing.
> Currently, all elements are appended to the root node.

line 44 is the issue (kind of), you're always adding to the root node, regardless of 'level'
the createNode func needs a little extra something, I played with it for a few minutes
and come up with this .. probably not exactly what you need but it might offer
a little inspiration (not I also changed the form of the input array a little):

<?php


class array2xml extends DomDocument
{

    private $xpath;

    private $root;

    public function __construct($arr, $root='root')
    {
        parent::__construct();

        /*** set the encoding ***/
        $this->encoding = "ISO-8859-1";

        /*** format the output ***/
        $this->formatOutput = true;

        /*** create the root element ***/
        $this->root = $this->appendChild($this->createElement( $root ));

        $this->xpath = new DomXPath($this);
    }

    /*
    * creates the XML representation of the array
    *
    * @access    public
    * @param    array    The array to convert
    */


    public function createNode( $arr, $node = null)
    {
        if (is_null($node))
            $node = $this->root;

        foreach($arr as $element => $value) {
            if (is_numeric($element)) {
                if (is_array($value))
                    self::createNode($value, $node);

            } else {
                $child = $this->createElement($element, (is_array($value) ? null : $value));
                $node->appendChild($child);

                if (is_array($value))
                    self::createNode($value, $child);

            }
        }
    }
    /*
    * Return the generated XML as a string
    *
    * @access    public
    * @return    string
    *
    */
    public function __toString()
    {
        return $this->saveXML();
    }

    /*
    * array2xml::query() - perform an XPath query on the XML representation of the array
    * @param str $query - query to perform
    * @return mixed
    */

    public function query($query)
    {
        return $this->xpath->evaluate($query);
    }

}



$array = array('employees'=> array('employee' => array(
            array(
                'name'=>'bill smith',
                'address'=>
                    array('number'=>1, 'street'=>'funny'),
                'age'=>25),
            array(
                'name'=>'tom jones',
                'address'=>
                    array('number'=>12, 'street'=>'bunny'),
                'age'=>88),
            array(
                'name'=>'dudley doright',
                'address'=>
                    array('number'=>88, 'street'=>'munny'),
                'age'=>23),
            array(
                'name'=>'nellie melba',
                'address'=>
                    array('number'=>83, 'street'=>'sunny'),
                'age'=>83)))
        );

try {
    $xml = new array2xml('root');
    $xml->createNode( $array );
    echo $xml;
} catch (Exception $e) {
    var_dump($e);
}






> 
> How can I fix this so that the XML tree, correctly reflects the array
> tree.
> 
> TIA
> J
> 
> ---------------------------------------------
> http://www.phpwomen.org/
> 
> 


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