title: PHP enter percentage number round to 2 decimal places not working
body: <p>php number round to 2 decimal places not working my number is <code>0.00000000000000000000001</code> and I want result as <code>0.01</code>. I tried php <a href="http://php.net/manual/en/function.number-format.php" rel="nofollow noreferrer">number_format()</a> function php <a href="http://php.net/manual/en/function.round.php" rel="nofollow noreferrer">round()</a> function but they didn't work for me. </p>