PHP - Commercial round
<p>I want to make commercial round to prices (with PHP)</p>

<p>For example : </p>

<p>15.55 becomes 15.60</p>

<p>15.54 becomes 15.50</p>

<p>147.77 becomes 147.80</p>

<p>==> Always zero in the end.</p>

<p>How can I do that ?</p>

<p>Thanks a lot.</p>
