IIRC Devel::ptkdb can be used for CGIs:

... from the docs

PTKDB_DISPLAY
Sets the X display that the ptkdb window will appear on when invoked. Useful for debugging CGI scripts on remote systems.

Cheers Rolf

UPDATE: see Re: Debugging CGI/PERL

In reply to Re^2: Detect variable change? by LanX
in thread Detect variable change? by DreamT

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