格式化文件大小信息代码,PHP代码库,德仔网

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【PHP】格式化文件大小信息
作者:Dezai.CN / 发布于2011/6/11/ 610
<div><span style="color: rgb(0,0,0); font-weight: bold"><?php</span>
<span style="color: rgb(0,0,0); font-weight: bold">function</span> GetFileSize<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> >= <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">2</span>,<span style="color: rgb(204,102,204)">40</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> = <a href="http://www.php.net/round" target="_blank"><span style="color: rgb(0,0,102)">round</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> / <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">1024</span>,<span style="color: rgb(204,102,204)">4</span><span style="color: rgb(102,204,102)">)</span>, <span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$strSuffix</span> = <span style="color: rgb(255,0,0)">"TB"</span>;
<span style="color: rgb(102,204,102)">}</span> 
<span style="color: rgb(177,177,0)">elseif</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> >= <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">2</span>,<span style="color: rgb(204,102,204)">30</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> = <a href="http://www.php.net/round" target="_blank"><span style="color: rgb(0,0,102)">round</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> / <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">1024</span>,<span style="color: rgb(204,102,204)">3</span><span style="color: rgb(102,204,102)">)</span>, <span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$strSuffix</span> = <span style="color: rgb(255,0,0)">"GB"</span>;
<span style="color: rgb(102,204,102)">}</span> 
<span style="color: rgb(177,177,0)">elseif</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> >= <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">2</span>,<span style="color: rgb(204,102,204)">20</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> = <a href="http://www.php.net/round" target="_blank"><span style="color: rgb(0,0,102)">round</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> / <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">1024</span>,<span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">)</span>, <span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$strSuffix</span> = <span style="color: rgb(255,0,0)">"MB"</span>;
<span style="color: rgb(102,204,102)">}</span> 
<span style="color: rgb(177,177,0)">elseif</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> >= <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">2</span>,<span style="color: rgb(204,102,204)">10</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> = <a href="http://www.php.net/round" target="_blank"><span style="color: rgb(0,0,102)">round</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$nBytes</span> / <a href="http://www.php.net/pow" target="_blank"><span style="color: rgb(0,0,102)">pow</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">1024</span>,<span style="color: rgb(204,102,204)">1</span><span style="color: rgb(102,204,102)">)</span>, <span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$strSuffix</span> = <span style="color: rgb(255,0,0)">"KB"</span>;
<span style="color: rgb(102,204,102)">}</span> 
<span style="color: rgb(177,177,0)">else</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> = <span style="color: rgb(0,0,255)">$nBytes</span>;
<span style="color: rgb(0,0,255)">$strSuffix</span> = <span style="color: rgb(255,0,0)">"Byte"</span>;
<span style="color: rgb(102,204,102)">}</span>

<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$strReturn</span> == <span style="color: rgb(204,102,204)">1</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> .= <span style="color: rgb(255,0,0)">" "</span> . <span style="color: rgb(0,0,255)">$strSuffix</span>;
<span style="color: rgb(102,204,102)">}</span> 
<span style="color: rgb(177,177,0)">else</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$strReturn</span> .= <span style="color: rgb(255,0,0)">" "</span> . <span style="color: rgb(0,0,255)">$strSuffix</span> . <span style="color: rgb(255,0,0)">"s"</span>;
<span style="color: rgb(102,204,102)">}</span>

<span style="color: rgb(177,177,0)">return</span> <span style="color: rgb(0,0,255)">$strReturn</span>;
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(0,0,0); font-weight: bold">?></span></div>
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