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<h1>数字辅助函数</h1>

<p>数字辅助函数可以协助您处理数字资料</p>


<h2>载入数字辅助函数</h2>

<p>使用如下代码来载入路径辅助函数:</p>
<code>$this-&gt;load-&gt;helper('number');</code>

<p>可用函数:</p>


<h2>byte_format()</h2>

<p>将文件大小以字节(bytes)格式化，并添加适合的缩写单位。例如：</p>

<code>
echo byte_format(456); // Returns 456.0 Bytes<br />
echo byte_format(4567); // Returns 4.5 KB<br />
echo byte_format(45678); // Returns 44.6 KB<br />
echo byte_format(456789); // Returns 447.8 KB<br />
echo byte_format(3456789); // Returns 3.3 MB<br />
echo byte_format(12345678912345); // Returns 1.8 GB<br />
echo byte_format(123456789123456789); // Returns 11,228.3 TB
</code>

<p>第二个可选的参数允许你设置结果的精确度。</p>

<code>
echo byte_format(45678, 2); // Returns 44.61 KB
</code>

<p class="important">
<strong>提示:</strong>
这个函数生成的文本（译注：文本单位）可以在下面的语言文件里找到: language/&lt;your_lang>/number_lang.php
</p><p>&nbsp;</p>
<div id="Contributors">
翻译贡献者:
Hex, IT不倒翁, sankai, tonera</div>
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最后修改: 2011-06-04 18:40:21</div>
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