I have some dates I need to compare. One comes from a database query and the other comes from a data calculation at script execution. 

# calculate data on run time to even previous hour
my $dt = POSIX::strftime("%Y-%m-%d", localtime( shift( @_ ) || time ) 
+);
my $hr = POSIX::strftime("%H", localtime( shift( @_ ) || time ) );
my $bhr = $hr - 1;
my $bdt = "$dt $bhr:00:00";

# this one comes from the DB but it looks like this
my $db_date = "2015-04-08 12:42:13";

# this is what I want to do
if ($db_date <= $bdt) {
    # process
}

[download]

But, obviously, that will not work: 

Argument "2015-04-09 12:00:00" isn't numeric in numeric le (<=) at ./c
+hk_notify_threshold.pl line 57.
Argument "2015-04-09..." isn't numeric in numeric le (<=) at ./chk_not
+ify_threshold.pl line 57.

[download]

How would I go about comparing these dates? Are there functions that will turn this string into a number?

In reply to Compare Dates by bfdi533

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