Ultimate Member - Sanitize fields

<?php
/**
 * Custom sanitization of fields
 */
add_filter('um_profile_field_filter_hook__','my_custom_sanitize_fields', 99, 2 );

function my_custom_sanitize_fields(  $value, $data ){
 
 // Add tags to mail value
 if ( !is_array( $value ) ) {
			if ( is_email( $value ) ){
				$value = '<a href="mailto:'. $value.'" title="'.$value.'">'.$value.'</a>';
			}
  } else {
         // implode array values
		  	$value = implode(', ', $value);
  }
  
  // Shorten url
  if ( $data['validate'] == 'facebook_url' ){ 
     $value = 'https://fb.com/' . $value;
  }
  
  return $value;
				
  
}
?>