title: Explode string php
body: <pre><code>$string = "|1|2|3|4|";
  $array = explode("|", $string, -1); 
  
  foreach ($array as $part) {
      echo $part."-";
  }
  </code></pre>
  
  <p>I use -1 in explode to skip the last "|" in string. But how do I do if I also want to skip the first "|"?</p>