round
对浮点数进行四舍五入
简体中文
简体中文
<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">round</span><span class="token punctuation">(</span><span class="token number">0.60</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">round</span><span class="token punctuation">(</span><span class="token number">0.50</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">round</span><span class="token punctuation">(</span><span class="token number">0.49</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">round</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">4.40</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">round</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">4.60</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
