PHP get file size and format

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<code><span><span>function</span><span>formatSize</span><span>(<span>$size</span>)</span> {</span><span>$sizes</span> = <span>array</span>(<span>" Bytes"</span>, <span>" KB"</span>, <span>" MB"</span>, <span>" GB"</span>, <span>" TB"</span>, <span>" PB"</span>, <span>" EB"</span>, <span>" ZB"</span>, <span>" YB"</span>); 
    <span>if</span> (<span>$size</span> == <span>0</span>) {  
        <span>return</span>(<span>'n/a'</span>);  
    } <span>else</span> { 
      <span>return</span> (round(<span>$size</span>/pow(<span>1024</span>, (<span>$i</span> = floor(log(<span>$size</span>, <span>1024</span>)))), <span>2</span>) . <span>$sizes</span>[<span>$i</span>]);  
    } 
} </code>

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The above introduces PHP to obtain the file size and format it, including the content. I hope it will be helpful to friends who are interested in PHP tutorials.