Question

I am building an iphone app which allows people to update an xml file by sending a POST to a php script. After they send the post to the php script and the xml is updated, I would like the user to be able to cancel the update to the XML. How can I delete just one element from the XML and rewrite the XML file to the same location on the server (in other words, just the one element is now gone, everything else is the same)? To add an element I used code that looks like the following:

$xmlUrl = "Bars.xml"; // XML 
$xmlStr = file_get_contents($xmlUrl);
$xml = new SimpleXMLElement($xmlStr);
$bartenders = $xml->xpath('//Bartenders');
$new_bartender = $bartenders[$newBar_ID]->addChild('Bartender');
$new_bartender->fname = $newfname;
$new_bartender->lname = $newlname;
$new_bartender->imageURL = $newimageURL;
$new_bartender->shift = $newShift;
print_r($bartenders);

$xml->asXML('Bars.xml');

When I send the POST method to the php script, I have the element’s attribute to identify which is to be deleted.
Thanks for your help.

Answer 1

Possible duplicate of THIS.

From your code snippet I don’t really know what data is given. You could try to do either

unset($bartenders[$newBar_ID]);

or

$bartenders->removeChild($bartenders[$newBar_ID]);

I guess… I wrote these based on code snippets google turned up, never tested them. Feel free to give me feedback if it works or not.