If you're looking for the first instance of the character '5' in a string of 9 numeric characters
index is your friend 
my $var = '503009496';

my $i = index($var, '5');

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I think that is what you are looking for.

In reply to Re: Need a regular expression to check the first digit by Anonymous Monk
in thread Need a regular expression to check the first digit by chandantul

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