date_interval_format

实例

计算两个日期间的间隔，然后格式化时间间隔：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$date1</span><span class="token operator">=</span><span class="token function">date_create</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"1984-01-28"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token variable">$date2</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">"1980-10-15"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token variable">$diff</span><span class="token operator">=</span><span class="token function">date_diff</span><span class="token punctuation">(</span><span class="token variable">$date1</span><span class="token punctuation">,</span><span class="token variable">$date2</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// %a 输出总天数</span>
<span class="token keyword">echo</span> <span class="token variable">$diff</span><span class="token operator">-></span><span class="token function"></span><mark><span class="token function">format</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"总天数：%a."</span><span class="token punctuation">)</span></mark><span class="token punctuation"></span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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