Dynamic Shortcode Values

Hello,

I am trying to dynamically generate shortcode content based on user-input form fields. I have created the function where the shortcode names (i.e., [blah]) come from the custom fields of any given post. However, I can only generate the content for the shortcode if I type a specific string value in the function called by add_shortcode.

For instance:

function myFields()
{
  $fieldValue = "Content for the shortcode."
  return $fieldValue;
}
foreach ( $custom_field_keys as $key => $keyName )
{
  //Bunch of other stuff

  add_shortcode((string)$keyName, 'myFields');
}

When [$keyName] exists in the post, it will be replaced by “Content for the shortcode” with no problems.

However, if I try and reference $fieldValue directly or even convert it into a string, [$keyName] has no value in the post:

$custom_field_keys = get_post_custom_keys();
  function myFields()
  {
         return $fieldValue;
  }
  foreach ( $custom_field_keys as $key => $keyName )
  {
         //Bunch of other stuff
	add_shortcode((string)$keyName, 'myFields');
  }

I am thinking that it has something to do with calling the function from within foreach. For some reason the value for $fieldValue is not being retrieved.

Any help would be appreciated and I’ll answer any questsions! Thanks!