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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>取得一个日期的 Unix 时间戳</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.mktime" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mktime</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">mktime</span> — <span class="dc-title">取得一个日期的 Unix 时间戳</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.mktime-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>mktime</strong></span>
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([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$hour</code><span class="initializer"> = date("H")</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$minute</code><span class="initializer"> = date("i")</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$second</code><span class="initializer"> = date("s")</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$month</code><span class="initializer"> = date("n")</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$day</code><span class="initializer"> = date("j")</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$year</code><span class="initializer"> = date("Y")</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$is_dst</code><span class="initializer"> = -1</span></span>
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]]]]]]] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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根据给出的参数返回 Unix 时间戳。时间戳是一个长整数，包含了从
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Unix 纪元（January 1 1970 00:00:00 GMT）到给定时间的秒数。
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</p>
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<p class="para">
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参数可以从右向左省略，任何省略的参数会被设置成本地日期和时间的当前值。
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.mktime-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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As of PHP 5.1, when called with no arguments, <span class="function"><strong>mktime()</strong></span>
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throws an <strong><code>E_STRICT</code></strong> notice: use the
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<span class="function"><a href="time.html" class="function">time()</a></span> function instead.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.mktime-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">hour</code></dt>
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<dd>
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<p class="para">
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小时数。
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The number of the hour relative to the start of the day determined by
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<code class="parameter">month</code>, <code class="parameter">day</code> and <code class="parameter">year</code>.
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Negative values reference the hour before midnight of the day in question.
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Values greater than 23 reference the appropriate hour in the following day(s).
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</p>
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</dd>
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<dt>
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<code class="parameter">minute</code></dt>
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<dd>
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<p class="para">
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分钟数。
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The number of the minute relative to the start of the <code class="parameter">hour</code>.
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Negative values reference the minute in the previous hour.
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Values greater than 59 reference the appropriate minute in the following hour(s).
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</p>
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</dd>
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<dt>
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<code class="parameter">second</code></dt>
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<dd>
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<p class="para">
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秒数（一分钟之内）。
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The number of seconds relative to the start of the <code class="parameter">minute</code>.
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Negative values reference the second in the previous minute.
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Values greater than 59 reference the appropriate second in the following minute(s).
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</p>
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</dd>
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<dt>
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<code class="parameter">month</code></dt>
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<dd>
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<p class="para">
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月份数。
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The number of the month relative to the end of the previous year.
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Values 1 to 12 reference the normal calendar months of the year in question.
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Values less than 1 (including negative values) reference the months in the previous year in reverse order, so 0 is December, -1 is November, etc.
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Values greater than 12 reference the appropriate month in the following year(s).
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</p>
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</dd>
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<dt>
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<code class="parameter">day</code></dt>
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<dd>
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<p class="para">
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天数。
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The number of the day relative to the end of the previous month.
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Values 1 to 28, 29, 30 or 31 (depending upon the month) reference the normal days in the relevant month.
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Values less than 1 (including negative values) reference the days in the previous month, so 0 is the last day of the previous month, -1 is the day before that, etc.
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Values greater than the number of days in the relevant month reference the appropriate day in the following month(s).
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</p>
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</dd>
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<dt>
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<code class="parameter">year</code></dt>
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<dd>
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<p class="para">
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年份数，可以是两位或四位数字，0-69 对应于 2000-2069，70-100
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对应于 1970-2000。在如今系统中普遍把 time_t 作为一个 32
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位有符号整数的情况下，<code class="parameter">year</code>
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的合法范围是 1901 到 2038 之间，不过此限制自
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PHP 5.1.0 起已被克服了。
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</p>
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</dd>
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<dt>
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<code class="parameter">is_dst</code></dt>
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<dd>
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<p class="para">
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本参数可以设为 1，表示正处于夏时制时间（DST），0
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表示不是夏时制，或者 -1（默认值）表示不知道是否是夏时制。如果未知，PHP
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会尝试自己搞明白。这可能产生不可预知（但并非不正确）的结果。如果
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PHP 运行的系统中启用了 DST 或者 <code class="parameter">is_dst</code>
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设为 1，某些时间是无效的。例如 DST 自 2:00 生效，则所有处于
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2:00 到 3:00 之间的时间都无效，<span class="function"><strong>mktime()</strong></span>
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会返回一个未定义（通常为负）的值。某些系统（例如
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Solaris 8）的 DST 在午夜生效，则 DST 生效当天的 0:30
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会被计算为前一天的 23:30。
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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自 PHP 5.1.0 起，本参数已被废弃。应该使用新的时区处理特性来替代。
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</p>
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</p></blockquote>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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PHP 7.0.0 起，此参数已经被移除。
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</p>
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</p></blockquote>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.mktime-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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<span class="function"><strong>mktime()</strong></span> 根据给出的参数返回 Unix
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时间戳。如果参数非法，本函数返回
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<strong><code>FALSE</code></strong>（在 PHP 5.1 之前返回 <em>-1</em>）。
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</p>
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</div>
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<div class="refsect1 errors" id="refsect1-function.mktime-errors">
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<h3 class="title">错误／异常</h3>
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<p class="para">
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在每 次调用日期/时间函数时，如果时区无效则会引发 <strong><code>E_NOTICE</code></strong> 错误，如果使用系统设定值或 <var class="varname"><var class="varname">TZ</var></var>
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环境变量，则会引发 <strong><code>E_STRICT</code></strong> 或 <strong><code>E_WARNING</code></strong> 消息。参见
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<span class="function"><a href="date_default_timezone_set.html" class="function">date_default_timezone_set()</a></span>。</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.mktime-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>7.0.0</td>
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<td>
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<code class="parameter">is_dst</code>参数已经被移除。
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</td>
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</tr>
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<tr>
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<td>5.3.0</td>
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<td>
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<span class="function"><strong>mktime()</strong></span> now throws <strong><code>E_DEPRECATED</code></strong> notice
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if the <code class="parameter">is_dst</code> parameter is used.
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</td>
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</tr>
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<tr>
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<td>5.1.0</td>
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<td>
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<code class="parameter">is_dst</code> 参数被废弃。出错时函数返回
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<strong><code>FALSE</code></strong> 而不再是 <em>-1</em>。修正了本函数可以接受年月日参数全为零。
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</td>
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</tr>
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<tr>
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<td>5.1.0</td>
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<td>
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When called with no arguments, <span class="function"><strong>mktime()</strong></span> throws
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<strong><code>E_STRICT</code></strong> notice. Use the
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<span class="function"><a href="time.html" class="function">time()</a></span> function instead.
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</td>
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</tr>
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<tr><td>5.1.0</td><td><p class="para">
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现在发布 <strong><code>E_STRICT</code></strong> 和 <strong><code>E_NOTICE</code></strong>
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时区错误。</p></td></tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.mktime-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-2727">
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<p><strong>Example #1 基本例子 </strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Set the default timezone to use. Available as of PHP 5.1<br /></span><span style="color: #0000BB">date_default_timezone_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'UTC'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Prints: July 1, 2000 is on a Saturday<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">"July 1, 2000 is on a " </span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"l"</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">7</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">2000</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">// Prints something like: 2006-04-05T01:02:03+00:00<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'c'</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">, </span><span style="color: #0000BB">4</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">2006</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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<div class="example" id="example-2728">
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<p><strong>Example #2 <span class="function"><strong>mktime()</strong></span> 例子</strong></p>
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<div class="example-contents"><p>
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<span class="function"><strong>mktime()</strong></span>
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在做日期计算和验证方面很有用，它会自动计算超出范围的输入的正确值。例如下面例子中每一行都会产生字符串
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"Jan-01-1998"。
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<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"</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">12</span><span style="color: #007700">, </span><span style="color: #0000BB">32</span><span style="color: #007700">, </span><span style="color: #0000BB">1997</span><span style="color: #007700">));<br />echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"M-d-Y"</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">13</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1997</span><span style="color: #007700">));<br />echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"M-d-Y"</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">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"M-d-Y"</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">98</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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<div class="example" id="example-2729">
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<p><strong>Example #3 下个月的最后一天</strong></p>
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<div class="example-contents"><p>
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任何给定月份的最后一天都可以被表示为下个月的第 "0"
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天，而不是 -1 天。下面两个例子都会产生字符串
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"The last day in Feb 2000 is: 29"。
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$lastday </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">3</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">2000</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">strftime</span><span style="color: #007700">(</span><span style="color: #DD0000">"Last day in Feb 2000 is: %d"</span><span style="color: #007700">, </span><span style="color: #0000BB">$lastday</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$lastday </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">4</span><span style="color: #007700">, -</span><span style="color: #0000BB">31</span><span style="color: #007700">, </span><span style="color: #0000BB">2000</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">strftime</span><span style="color: #007700">(</span><span style="color: #DD0000">"Last day in Feb 2000 is: %d"</span><span style="color: #007700">, </span><span style="color: #0000BB">$lastday</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
|
||
</p>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 notes" id="refsect1-function.mktime-notes">
|
||
<h3 class="title">注释</h3>
|
||
<div class="caution"><strong class="caution">Caution</strong>
|
||
<p class="para">
|
||
在 PHP 5.1.0 之前，在任何已知 Windows
|
||
版本以及一些其它系统下不支持负的时间戳。因此年份的有效范围限制为
|
||
1970 到 2038。
|
||
</p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 seealso" id="refsect1-function.mktime-seealso">
|
||
<h3 class="title">参见</h3>
|
||
<p class="para">
|
||
<ul class="simplelist">
|
||
<li class="member"><span class="function"><a href="checkdate.html" class="function" rel="rdfs-seeAlso">checkdate()</a> - 验证一个格里高里日期</span></li>
|
||
<li class="member"><span class="function"><a href="gmmktime.html" class="function" rel="rdfs-seeAlso">gmmktime()</a> - 取得 GMT 日期的 UNIX 时间戳</span></li>
|
||
<li class="member"><span class="function"><a href="date.html" class="function" rel="rdfs-seeAlso">date()</a> - 格式化一个本地时间／日期</span></li>
|
||
<li class="member"><span class="function"><a href="time.html" class="function" rel="rdfs-seeAlso">time()</a> - 返回当前的 Unix 时间戳</span></li>
|
||
</ul>
|
||
</p>
|
||
</div>
|
||
|
||
</div></div></div></body></html> |