title: Why is PHP printing my number in scientific notation, when I specified it as .000021?
body: <p>In PHP I have the following code:</p>
  
  <pre><code>&lt;?PHP
    $var = .000021;
    echo $var;
  ?&gt;
  </code></pre>
  
  <p>the output is 2.1E-5  !</p>
  
  <p>Why? it should print .000021</p>