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Full Discussion: Perl - setting a variable ?
Top Forums Shell Programming and Scripting Perl - setting a variable ? Post 302349473 by rethink on Tuesday 1st of September 2009 05:43:54 AM
Old 09-01-2009
Perl - setting a variable ?
hi there, I have a question about a snippet of code i have which runs localtime() to convert the current date/time into a mysql happy format



Code:
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
printf "%4d-%02d-%02d  %02d:%02d:%02d\n",$year+1900,$mon+1,$mday,$hour,$min,$sec;

If i run the above as a standalone script, i get the desired result

Code:
 # ./time.pl 
2009-09-01 10:22:18

However, what i want to do is incorporate it as part of another script and populate an internal variable with the result rather than sending it to standard out ...so i tried this

Code:
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
my  $datetime = printf "%4d-%02d-%02d  %02d:%02d:%02d\n",$year+1900,$mon+1,$mday,$hour,$min,$sec;

print "\n datetime equals $datetime\n";

Code:
# ./time.pl 
2009-09-01 10:10:31

datetime equals 1
#

but as you can see, not only has it still output to result to standard out (not ideal), but it has populated the variable $datatime with the value "1"

is there something im doing drstically wrong here

any hlp would be great
 

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LEARN ABOUT DEBIAN

posix::strptime

POSIX::strptime(3pm)					User Contributed Perl Documentation				      POSIX::strptime(3pm)

NAME

       POSIX::strptime - Perl extension to the POSIX date parsing strptime(3) function

SYNOPSIS

	($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = POSIX::strptime("string", "Format");

DESCRIPTION

       Perl interface to strptime(3)

FUNCTIONS

       strptime
	    ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = POSIX::strptime(string, format);

	   The result for any value not extracted is not defined. Some platforms may reliably return "undef", but this is dependent on the
	   strptime(3) function in the underlying C library.

	   For example, only the following fields may be relied upon:

	    my ($min, $hour) = ( POSIX::strptime( "01:23", '%H:%M' ) )[1,2];

	    my ($mday, $mon, $year) = ( POSIX::strptime( "2010/07/16", '%Y/%m/%d' ) )[3,4,5];

	   Furthermore, not all platforms will set the $wday and $yday elements. If these values are required, use "mktime" and "gmtime":

	    use POSIX qw( mktime );
	    use POSIX::strptime qw( strptime );

	    my ($mday, $mon, $year) = ( POSIX::strptime( "2010/07/16", '%Y/%m/%d' ) )[3,4,5];
	    my $wday = ( gmtime mktime 0, 0, 0, $mday, $mon, $year )[6];

SEE ALSO

       strptime(3)

AUTHOR

       Philippe M. Chiasson <gozer@cpan.org> Kim Scheibel <kim@scheibel.co.uk>

REPOSITORY

       http://svn.ectoplasm.org/projects/perl/POSIX-strptime/trunk/

COPYRIGHT

       Copyright 2005 by Philippe M. Chiasson <gozer@cpan.org>.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       See http://www.perl.com/perl/misc/Artistic.html

perl v5.14.2							    2010-07-16						      POSIX::strptime(3pm)
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