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use Date::Parse;<br />
use POSIX;<br />
sub yyyymmdd{<br />
&nbsp;my @F;<br />
&nbsp;return strftime &quot;%Y-%m-%d&quot;,@F if @F=strptime shift;<br />
&nbsp;return 0;<br />
}<br />

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Is there another way? &nbsp;My system does not have Date::Parse, and I am not allowed to include the library in the system.
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If you want to write your own date parser, can you list all the various date formats that you want to convert?
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Acceptable input format:<br />
01/02/2010<br />
1/2/2010<br />
01/02/10<br />
1/2/10<br />
<br />
Output format:<br />
yyyy-mm-dd<br />
<br />
Also, the date has to be a valid date (13/13/2010 would be invalid)
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Ozo, you are such a genius. &nbsp;<br />
<br />
Thank you so much.
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<div class="content wysiwyg-content">
Need a subroutine that takes in a date string of various format and return date string in format yyyy-mm-dd. &nbsp;If date is not a valid date then rerun 0; &nbsp;I would prefer if you use any of the Perl date library.
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Need a subroutine that takes in a date string of various format and return date string in format yyyy-mm-dd.  If date is not a valid date then rerun 0;  I would prefer if you use any of the Perl date library.

Perl, a subroutine that takes in a date string of various format and return date string in format yyyy-mm-dd

Perl is a high-level, general-purpose, interpreted, dynamic programming languages with over 25 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large-scale development projects.  Perl gained widespread popularity as a Common Gateway Interface (CGI) scripting language, in part due to its regular expression and string parsing abilities. In addition to CGI, Perl is used for graphics programming, system administration, network programming, finance, bioinformatics, and other applications.