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<html><head><title>Time::localtime (Programming Perl)</title><!-- STYLESHEET --><link rel="stylesheet" type="text/css" href="../style/style1.css"><!-- METADATA --><!--Dublin Core Metadata--><meta name="DC.Creator" content=""><meta name="DC.Date" content=""><meta name="DC.Format" content="text/xml" scheme="MIME"><meta name="DC.Generator" content="XSLT stylesheet, xt by James Clark"><meta name="DC.Identifier" content=""><meta name="DC.Language" content="en-US"><meta name="DC.Publisher" content="O'Reilly & Associates, Inc."><meta name="DC.Source" content="" scheme="ISBN"><meta name="DC.Subject.Keyword" content=""><meta name="DC.Title" content="Time::localtime"><meta name="DC.Type" content="Text.Monograph"></head><body><!-- START OF BODY --><!-- TOP BANNER --><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home"><map name="banner-map"><AREA SHAPE="RECT" COORDS="0,0,466,71" HREF="index.htm" ALT="Programming Perl"><AREA SHAPE="RECT" COORDS="467,0,514,18" HREF="jobjects/fsearch.htm" ALT="Search this book"></map><!-- TOP NAV BAR --><div class="navbar"><table width="515" border="0"><tr><td align="left" valign="top" width="172"><a href="ch32_44.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0"></a></td><td align="center" valign="top" width="171"><a href="ch32_01.htm">Chapter 32: Standard Modules</a></td><td align="right" valign="top" width="172"><a href="ch32_46.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0"></a></td></tr></table></div><hr width="515" align="left"><!-- SECTION BODY --><h2 class="sect1">32.45. Time::localtime</h2><p><blockquote><pre class="programlisting">use Time::localtime;printf "Year is %d\n", localtime->year() + 1900;$now = ctime();use Time::localtime;use File::stat;$date_string = ctime(stat($file)->mtime);</pre></blockquote>This module's overrides the core <tt class="literal">localtime</tt> function, replacing itwith a version that returns a <tt class="literal">Time::tm</tt> object (or <tt class="literal">undef</tt> onfailure). The <tt class="literal">Time::gmtime</tt> module does the same thing, except it replaces the core <tt class="literal">gmtime</tt> function, instead. The returned objecthas methods that access the like-named structure field names fromthe C library's <tt class="literal">struct tm</tt> out of <em class="emphasis">time.h</em>; namely <tt class="literal">sec</tt>, <tt class="literal">min</tt>,<tt class="literal">hour</tt>, <tt class="literal">mday</tt>, <tt class="literal">mon</tt>, <tt class="literal">year</tt>, <tt class="literal">wday</tt>, <tt class="literal">yday</tt>, and <tt class="literal">isdst</tt>. The<tt class="literal">ctime</tt> function provides a way of getting at (the scalar sense of)the original <tt class="literal">CORE::localtime</tt> function. Note that the valuesreturned are straight out of a <tt class="literal">struct tm</tt>, so they have the same ranges found there; see the example above for the correct way to produce afour-digit year. The <tt class="literal">POSIX::strftime</tt> function is even moreuseful for formatting dates and times in a variety of appealingstyles.</p><!-- BOTTOM NAV BAR --><hr width="515" align="left"><div class="navbar"><table width="515" border="0"><tr><td align="left" valign="top" width="172"><a href="ch32_44.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0"></a></td><td align="center" valign="top" width="171"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0"></a></td><td align="right" valign="top" width="172"><a href="ch32_46.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0"></a></td></tr><tr><td align="left" valign="top" width="172">32.44. Time::Local</td><td align="center" valign="top" width="171"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0"></a></td><td align="right" valign="top" width="172">32.46. User::grent</td></tr></table></div><hr width="515" align="left"><!-- LIBRARY NAV BAR --><img src="../gifs/smnavbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links"><p><font size="-1"><a href="copyrght.htm">Copyright © 2001</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"> <area shape="rect" coords="2,-1,79,99" href="../index.htm"><area shape="rect" coords="84,1,157,108" href="../perlnut/index.htm"><area shape="rect" coords="162,2,248,125" href="../prog/index.htm"><area shape="rect" coords="253,2,326,130" href="../advprog/index.htm"><area shape="rect" coords="332,1,407,112" href="../cookbook/index.htm"><area shape="rect" coords="414,2,523,103" href="../sysadmin/index.htm"></map><!-- END OF BODY --></body></html>⌨️ 快捷键说明
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