Question

I would like my function to convert array of dimension N to xml, but it doesn’t work.
Anyone can point me in the right direction?

function arrayToXml($array,$render = ""){
if(!is_array($array)){
    return $array;
}
foreach ($array as $key => $value) {
    if(is_array($value)){
        $render .= '<' . $key . '>';
        arrayToXml($value,$render);
    }
    else {
        $render .= '<' . $key . '>';
        $render .= $value;
        $render .=  '</' . $key . '>';
    }
}
return $render;

}

Ok, I have found the solution:

function arrayToXml($array,$render = ""){
if(!is_array($array)){
    return $array;
}
foreach ($array as $key => $value) {
    if(is_array($value)){
        $render .= '<' . $key . '>';
        $render = arrayToXml($value,$render);
        $render .=  '</' . $key . '>';
    }
    else {
        $render .= '<' . $key . '>';
        $render .= $value;
        $render .=  '</' . $key . '>';
    }
}
return $render;

}

Answer 1

You are not using the return value of arrayToXml($value,$render);, but you need to assign it to $render as well.

// …
if(is_array($value)){
    $render .= '<' . $key . '>';
    $render .= arrayToXml($value,$render);
}

Also note that tons of ready-to-use script can be found on the web to translate a PHP array into XML. For example http://snipplr.com/view/3491/.