PHP: SimpleXML question

[carlosbutler]

Hello!

I am trying to go through an XML file and take out certain parts of it.

As seen below, the Line is a child of LineStatus. I would like to remove, say, the LineStatus block that Line ID="2" is in from the XML document. I know the format of the XML is a bit strange, but surely there is a way of doing this?

The structure of it is like this:

<?xml version="1.0" encoding="utf-8"?>
<ArrayOfLineStatus xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://webservices.lul.co.uk/">
  
  <LineStatus ID="0" StatusDetails="">
    <BranchDisruptions />
    <Line ID="1" Name="Name1" />
    <Status ID="GS" CssClass="GoodService" Description="Good Service" IsActive="true">
      <StatusType ID="1" Description="Line" />
    </Status>
  </LineStatus>
  
  <LineStatus ID="1" StatusDetails="Problem to service">
    <BranchDisruptions />
    <Line ID="2" Name="Name2" />
    <Status ID="PC" CssClass="DisruptedService" Description="Part Closure" IsActive="true">
      <StatusType ID="1" Description="Line" />
    </Status>
  </LineStatus>
  
</ArrayOfLineStatus>

I am doing this in PHP and reading the file:

$xmlstr = file_get_contents('an.xml');
$sitemap = new SimpleXMLElement($xmlstr);

foreach($sitemap->children() as $child) {	
	foreach($child->children() as $subchild) {		
		foreach($subchild->attributes() as $subchildAttr) {			
			if ($subchildAttr->getName() == 'Name' && ($subChildAttr != "82" || $subChildAttr != "81")) {
				echo $subchild->asXML()."\n";
			}
		}
	}
}
?>

Thanks!

 

[snebes]

If there are manageable blocks, perhaps you should just use a regular expression to match/remove them. Or are you looking for more complex alterations?

 

[carlosbutler]

Just to remove a block that will keep the same form. But how would a regex help? (not being funny... Just really not sure how I would implement it)

 

[snebes]

You would read the XML file like a text file, not into an XML reader. That way you could just do something like this:

$xmlstr = file_get_contents('an.xml');
$result = preg_replace("#<LineStatus ID=\"1\".*?</LineStatus>#si", "", $xmlstr);
// save $result to file or whatever.