number_format

名稱:number_format

分類:字符串

所屬語言:php

一句話介紹:以千位分組來格式化數字。

實例

例子1

格式化數字：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">number_format</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"5000000"</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">number_format</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"5000000"</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">number_format</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"5000000"</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">","</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"."</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子2

您希望返回一個價格：一個參數將對數字進行舍入（格式化為不帶小數位），兩個參數給出您想要的結果：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$num</span> <span class="token operator">=</span> <span class="token number">4999.9</span> <span class="token punctuation">;</span>
<span class="token variable">$formattedNum</span> <span class="token operator">=</span> <span class="token function">number_format</span> <span class="token punctuation">(</span> <span class="token variable">$num</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$formattedNum</span> <span class="token punctuation">;</span>
<span class="token variable">$formattedNum</span> <span class="token operator">=</span> <span class="token function">number_format</span> <span class="token punctuation">(</span> <span class="token variable">$num</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$formattedNum</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

親自試一試