title: Why is PHP outputting decimals with a -E
body: <p>I am trying to round a decimal after a subtraction:</p>
  
  <pre><code>$decimal = round(0.000300-0.000200,6);
  </code></pre>
  
  <p>The out put I want is : 0.0001</p>
  
  <p>but why is -1.0E-4 appearing? I know what it means, but why is it displaying this way? Is this some kind of php setting causing this?</p>