When I transform xml with PHP, it always add the <?xml version="1.0"?>.

Can I solve it from the XSLT file itself?

Try omit-xml-declaration="yes" in the xsl:output declaration.

Note however that if you use any output encoding other than UTF-8 or UTF-16, your output document MUST include an XML declaration if it is to be well-formed XML.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

thanks it work.

Hi,

I have the same problem when outputting text files and the omit-xml-declaration doesn't work.
Here is my output tag :

<xsl:output
    method="text"
    indent="no"
    omit-xml-declaration="yes"
    name="GML"/>

i have always in the resulting file : <?xml version="1.0" encoding="UTF-8"?> before my text
I have the latest version of saxon.

Thanks

You should never get an XML declaration when you output using method="text".

One possible explanation is that the XSLT processor isn't doing the serialization - perhaps you are writing the output to a DOM, and then serializing using the DOM serializer.

But I notice that your xsl:output specifies name="GML", so it will only affect output written using <xsl:result-document format="GML">.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference