Thanks for your advice! Your code works fine with respect to the splitting, but the problem is that it gets only the first two <no> elements for the file name. If I add for example a third (or more) <no>-element then $from contains the contents of the first <no> element and $to contains the contents of the second <no> element but I need to get the contents of the first and last <no> element for the file name in the following example that would be text-nr4to20.xml 
<?split ?>
<h1>text</h1>
<text>
Textinhalt
<no>4</no>
</text>
text ... text
<no>18</no>
<no>19</no>
<no>20</no>
<h6>text</h6>
<?split ?>

[download]
Maybe it's possible to write the contents of the <no> elements to an array and get the first with $a[0] and the last with $a[$#] but I didn't manage to change the code with respect to that. Maybe you can help me once more?

In reply to Re^2: Splitting XML file on Processing Instructions by Anonymous Monk
in thread Splitting XML file on Processing Instructions by Wappel

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