You want a hash. 
%mon2num = qw(
  jan 1  feb 2  mar 3  apr 4  may 5  jun 6
  jul 7  aug 8  sep 9  oct 10 nov 11 dec 12
);

print $mon2num{ lc substr($month, 0, 3) };

[download]
That works for "JANUARY", "Mar", "decemb.", "oct", and many other variants.

In reply to Re: Convert month name to number by japhy
in thread Convert month name to number by xorl

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