四捨五入到小數點後第二位，並自動補0到小數點後第二位:
sprintf("%.2f", round($num,2))


本筆記參考:
1. https://www.cnblogs.com/ryanzheng/p/12292852.html

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<div class="draft-block draft--p left">四捨五入到小數點後第二位，並自動補0到小數點後第二位:<br>sprintf("%.2f", round($num,2))</div>
<div class="draft--imgNormal draft-block"><div><div style="height:473px" class="image-block-prerender" data-src="https://images.vocus.cc/36eb8ea1-e4a6-4e70-866a-15284b640104.jpg" data-width="473" data-height="397" data-position="center"></div><figcaption class="imageCaption draft-block" style="cursor:text;display:block"></figcaption></div></div>
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<div class="draft-block draft--p left"><span style="font-style: italic; ">本筆記參考:<br>1. </span><a href="https://www.cnblogs.com/ryanzheng/p/12292852.html" target="_blank" class="draft--a"><span style="font-style: italic; ">https://www.cnblogs.com/ryanzheng/p/12292852.html</span></a></div>

<p>四捨五入到小數點後第二位，並自動補0到小數點後第二位:<br>
sprintf("%.2f", round($num,2))</p>
<p><br></p>
<p><br></p>
<p><em>本筆記參考:<br>
1. </em><a href="https://www.cnblogs.com/ryanzheng/p/12292852.html"><em>https://www.cnblogs.com/ryanzheng/p/12292852.html</em></a></p>

四捨五入到小數點後第二位，並自動補0到小數點後第二位:
sprintf("%.2f", round($num,2))

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