max
找出最大值
在本例中,我们将使用 max()
来返回两个指定的数中的最大值:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token keyword">echo</span><span class="token punctuation">(</span><span class="token function">max</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">,</span><span class="token number">7</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 punctuation">(</span><span class="token function">max</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token number">5</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 punctuation">(</span><span class="token function">max</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token operator">-</span><span class="token number">5</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 punctuation">(</span><span class="token function">max</span><span class="token punctuation">(</span><span class="token number">7.25</span><span class="token punctuation">,</span><span class="token number">7.30</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>