XMLFUN

<?php

    /* Write php protected XML config file to store database credentials */
    function write_db_config($string, $user = "", $pass = "", $updir = false) {

        /* Determine filename to be used */
        $filename = 'db_config.xml.php';
        if($updir)
            $filename = "./../$filename";
        else
            $filename = "./$filename";

        /* Create DOM object for config XML */
        $dom = new DomDocument('1.0');

        /* Add meta-root (Needed for php protection of XML files) */
        $root = $dom->appendChild($dom->CreateElement('root'));

        /* Add comment to prevent browsers reading XML */
        $comment = $dom->createComment("<?php die('-->Permission denied.'); ?>");
        $dom->appendChild($comment);

        /* Add config root */
        $dbconfig = $root->appendChild($dom->CreateElement('dbconfig'));

        /* Add elements */
        $connect_string = $dbconfig->appendChild($dom->createElement('connect_string'));
        $username       = $dbconfig->appendChild($dom->createElement('username'));
        $password       = $dbconfig->appendChild($dom->createElement('password'));

        /* Add text to nodes */
        $connect_string->appendChild($dom->createTextNode($string));

        if($user != "" )
            $username->appendChild($dom->createTextNode($user));

        if($pass != "" )
            $password->appendChild($dom->createTextNode($pass));

        /* Generate XML */
        $dom->formatOutput = true;
        $output = $dom->saveXML($comment) . "\n" . $dom->saveXML($dbconfig);

        /* Write out XML file */
        $filehandle = fopen($filename, 'w');
        $result = fwrite($filehandle, $output);
        fclose($filehandle);

        /* Final check to see if the file was written */
        if($result) {
            return true;
        } else {
            echo("Could not write config file!");
            return false;
        }
    }


?>