title: Replace multiple commas in a string with a single comma using php
body: <p>I have a string which has multiple commas at different places. i want to replace multiple occurances of comma in the string with a single comma.</p>
  
  <p>My string is:</p>
  
  <pre><code>$string = "EN:25,,,BR:18,,UE:21,,,NED:24,FR:20";
  </code></pre>