Add Gravity Forms data to custom database table

gistfile1.txt

add_action('gform_after_submission', 'endo_add_entry_to_db', 10, 2);
function endo_add_entry_to_db($entry, $form) {

	  // uncomment to see the entry object 
	  // echo '<pre>';
	  // var_dump($entry);
	  // echo '</pre>';

  	$source = $entry['source_url'];
  
	  $email = 	$entry[5];
	  $param1 = 	$entry[2];
	  $param2 = 	$entry[3];


  	global $wpdb;
  
  	// add form data to custom database table
	$wpdb->insert(
	    'custom_table_name',
	    array(
	      'source_url' => $source,
	      'email' => $email,
	      'param1' => $param1,
	      'param2' => $param2,
	      'date' => current_time( 'mysql' )
	    )
	);

}