title: How to sort array numbers high to low in PHP?
body: <p>It is array:</p>
  
  <pre><code>$a = rand(1,100);
  $b = rand(1,100);
  $c = rand(1,100);
  $arr =  array($a ,$b , $c);
  </code></pre>
  
  <p>I want to  sort generated numbers high to low.</p>