Generate XML with 'SimpleXMLElement' with some empty filelds? - php

Question

$sitemap .= " " . '<orders>' . "\n" .
"\t" . '<idKlant>' . $id. '</idKlant>' .
"\n\t" . '<emptyfield></emptyfield>' .
"\n\t" . '<date>' . $verzenddatum . '</date>' . //remaining to get
"\n " . '</orders>' . "\n";
For generating XMl, I am using below code
$xmlobj = new SimpleXMLElement($sitemap);
$xmlobj->asXML("orders.xml");
Output of orders.xml
<orders>
<idKlant>12</idKlant>
<emptyfield/>
<date>30-12-2012</date>
</orders>
What i want is: for Empty xml field there should be Opening and Closing tag as well
<orders>
<idKlant>12</idKlant>
<emptyfield></emptyfield>
<date>30-12-2012</date>
</orders>
Is it possible? OR should i add black space?

Answer 1

As Rolando Isidoro said you can't do it with SimpleXML. But you can always switch to the DOM. Both extension use the same underlying library and representation, so there is very little overhead.
DOMDocument::saveXML can take libxml options as the second parameter and there is LIBXML_NOEMPTYTAG which does exactly what you want.
e.g.
<?php
$o = new SimpleXMLELement(data());
$docRoot = dom_import_simplexml($o);
echo $docRoot->ownerDocument->savexml($docRoot,LIBXML_NOEMPTYTAG);
function data() {
return '<orders>
<idKlant>12</idKlant>
<emptyfield/>
<date>30-12-2012</date>
</orders>';
}
prints
<orders>
<idKlant>12</idKlant>
<emptyfield></emptyfield>
<date>30-12-2012</date>
</orders>