function.gmdate.html
来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 171 行
HTML
171 行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Format a GMT/UTC date/time</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.gettimeofday.html">gettimeofday</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.gmmktime.html">gmmktime</a></div> <div class="up"><a href="ref.datetime.html">Date/Time Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.gmdate" class="refentry"> <div class="refnamediv"> <h1 class="refname">gmdate</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">gmdate</span> — <span class="dc-title">Format a GMT/UTC date/time</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><b>gmdate</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$format</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$timestamp</tt></span> ] )</div> <p class="para rdfs-comment"> Identical to the <a href="function.date.html" class="function">date()</a> function except that the time returned is Greenwich Mean Time (GMT). </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">format</tt></i></span> <dd> <p class="para"> The format of the outputted date <a href="language.types.string.html" class="type string">string</a>. See the formatting options for the <a href="function.date.html" class="function">date()</a> function. </p> </dd> </dt> <dt><span class="term"><i><tt class="parameter">timestamp</tt></i></span><dd><p class="para">The optional <i><tt class="parameter">timestamp</tt></i> parameter is an <a href="language.types.integer.html" class="type integer">integer</a> Unix timestamp that defaults to the currentlocal time if a <i><tt class="parameter">timestamp</tt></i> is not given. In other words, it defaults to the value of <a href="function.time.html" class="function">time()</a>. </p></dd></dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns a formatted date string. If a non-numeric value is used for <i><tt class="parameter">timestamp</tt></i>, <b><tt>FALSE</tt></b> is returned and an <i>E_WARNING</i> level error is emitted. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.1.0</td> <td colspan="1" rowspan="1" align="left"> The valid range of a timestamp is typically from Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are the dates that correspond to the minimum and maximum values for a 32-bit signed integer). However, before PHP 5.1.0 this range was limited from 01-01-1970 to 19-01-2038 on some systems (e.g. Windows). </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.1.1</td> <td colspan="1" rowspan="1" align="left"> There are useful <a href="datetime.constants.html" class="link">constants</a> of standard date/time formats that can be used to specify the <i><tt class="parameter">format</tt></i> parameter. </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>gmdate()</b> example</b></p> <div class="example-contents"><p> When run in Finland (GMT +0200), the first line below prints "Jan 01 1998 00:00:00", while the second prints "Dec 31 1997 22:00:00". </p></div> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"M d Y H:i:s"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1998</span><span style="color: #007700">));<br />echo </span><span style="color: #0000BB">gmdate</span><span style="color: #007700">(</span><span style="color: #DD0000">"M d Y H:i:s"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1998</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.date.html" class="function" rel="rdfs-seeAlso">date()</a></li> <li class="member"><a href="function.mktime.html" class="function" rel="rdfs-seeAlso">mktime()</a></li> <li class="member"><a href="function.gmmktime.html" class="function" rel="rdfs-seeAlso">gmmktime()</a></li> <li class="member"><a href="function.strftime.html" class="function" rel="rdfs-seeAlso">strftime()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.gettimeofday.html">gettimeofday</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.gmmktime.html">gmmktime</a></div> <div class="up"><a href="ref.datetime.html">Date/Time Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?