title: WordPress Multiple do shortcode filter
body: <p>Looked around and could not find anything relating to this. Attempting to run multiple instances of the do shortcode filter on a WordPress website to pre populate some form values in a web form. </p>
  
  <p>Still working our way through this and getting some errors. How would we combine them and avoid duplicate function errors and other related issues?</p>
  
  <p>A current working example of a single do shortcode filter, this alone works:</p>
  
  <pre><code>add_filter('gform_field_value_Leadsource', 'my_custom_population_function');
  function my_custom_population_function($value){
  return do_shortcode('[Leadsource]');
  }
  </code></pre>
  
  <p>How would we combine the following do shortcode filters into one single bit of code? A copy and paste example would be so helpful.</p>
  
  <pre><code>add_filter('gform_field_value_Leadsource', 'my_custom_population_function');
  function my_custom_population_function($value){
  return do_shortcode('[Leadsource]');
  }
  add_filter('gform_field_value_First', 'my_custom_population_function');
  function my_custom_population_function($value){
  return do_shortcode('[i4w_db_FirstName]');
  }
  add_filter('gform_field_value_Last', 'my_custom_population_function');
  function my_custom_population_function($value){
  return do_shortcode('[i4w_db_LastName]');
  }
  add_filter('gform_field_value_Email', 'my_custom_population_function');
  function my_custom_population_function($value){
  return do_shortcode('[i4w_db_Email]');
  }
  </code></pre>
  
  <p>Thank you to anyone who can help! :)</p>