date_interval_create_from_date_string
DateInterval::createFromDateString的别名 - 从字符串的相对部分设置日期间隔
使用 date_interval_create_from_date_string() 向日期添加 1 年和 35 天:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$date</span> <span class="token operator">=</span> <span class="token function">date_create</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'2019-01-01'</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token function">date_add</span><span class="token punctuation">(</span><span class="token variable">$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 single-quoted-string">'1 year 35 days'</span><span class="token punctuation">)</span><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 single-quoted-string">'Y-m-d'</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>