Unrecognized escape \d passed through at C:\Daten\perl\forum\qr.pl line 3.
Final $ should be \$ or $name at C:\Daten\perl\forum\qr.pl line 3, within string
syntax error at C:\Daten\perl\forum\qr.pl line 3, near "=~ "^\d+$""
Execution of C:\Daten\perl\forum\qr.pl aborted due to compilation errors.