As long as @data is a 2D array this statement will store the data in CSV form in the scalar $temp so that it can be printed out to a file. 
$temp = join "\n", map { $_ = join ",", @{$_} } @data;

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In reply to Re: How do I create a CSV from a 2D array? by fenonn
in thread How do I create a CSV from a 2D array? by bari

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