is there an option with DomDocument to remove the first line:
<?xml version="1.0" encoding="UTF-8"?>
The class instantiation automatically adds it to the output, but is it possible to get rid of it?
I think using DOMDocument is a universal solution for valid XML files:
If you have xml allready loaded in a variable:
$t_xml = new DOMDocument();
$t_xml->loadXML($xml_as_string);
$xml_out = $t_xml->saveXML($t_xml->documentElement);
For XML file from disk:
$t_xml = new DOMDocument();
$t_xml->load($file_path_to_xml);
$xml_out = $t_xml->saveXML($t_xml->documentElement);
This comment helped: http://www.php.net/manual/en/domdocument.savexml.php#88525