When the question is, "What is in this variable?" the answer is Data::Dumper (or one of its alternatives from CPAN). For anything more complex than a single scalar value, it's typically easier to type the two lines below than to create a loop or recursive function to print the thing. (Typically I 'use Data::Dumper' in all my programs during development, so I only need to type the second line to quickly dump a variable.) 

use Data::Dumper;
print Dumper @interval;

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Aaron B.
My Woefully Neglected Blog, where I occasionally mention Perl.

In reply to Re: Database MySQL Perl by aaron_baugher
in thread Database MySQL Perl by akagrawal3

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