date_sub

DateTime::sub的别名 - 对一个 DateTime 对象减去一定量的日、月、年、小时、分钟和秒

名称:date_sub

分类:日期和时间

所属语言:php

一句话介绍:从指定日期减去日、月、年、时、分和秒。

实例

从 2016 年 9 月 29 日减去 4 天：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$date</span><span class="token operator">=</span><span class="token function">date_create</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"2016-09-29"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function"></span><mark><span class="token function">date_sub</span><span class="token punctuation">(</span><span class="token variable">$date</span><span class="token punctuation">,</span><span class="token function">date_interval_create_from_date_string</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"4 days"</span><span class="token punctuation">)</span><span class="token punctuation">)</span></mark><span class="token punctuation"></span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">date_format</span><span class="token punctuation">(</span><span class="token variable">$date</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"Y-m-d"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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