title: How can I strip a leading zero from a number in custom fields? - Wordpress
body: <p>I have an EAN code in a custom field, but unfortunately it has more then 13 characters because there are always leading zeros in it. </p>
  
  <p>Example:
  04055432153691 -> 4055432153691</p>
  
  <p>Is there a way to strip this zero from the field so there are 13 characters?</p>
  
  <p>Thanks in advance for your help.
  Karolin</p>