Improved Gravity Forms widget function

improved_widget_function.php

<?php
/*
 * At line 56 of widget.php.
 *
 * - Adds default values for $instance to prevent PHP warnings
 * - Gets rid of extract statement (using it does not make code any more readable)
 */
 
function widget( $args, $instance ) {

	$defaults = [
		'ajax'            => false,
		'disable_scripts' => false,
		'form_id'         => 0,
		'showdescription' => false,
		'showtitle'       => false,
		'tabindex'        => 1,
		'title'           => '',
	];
	
	$instance = wp_parse_args( $instance, $defaults );
	
	// make sure integers are integers...
	$tabindex = is_numeric( $instance['tabindex'] ) ? intval( $instance['tabindex'] ) : 1;
	$form_id  = is_numeric( $instance['form_id'] )  ? intval( $instance['form_id'] )  : 0;
	
	// ...and bools are bools
	$ajax            = $instance['ajax']            !== false;
	$disable_scripts = $instance['disable_scripts'] !== false;
	$showdescription = $instance['showdescription'] !== false;
	$showtitle       = $instance['showtitle']       !== false;
	
	// If there's no form, exit; I believe this is a valid way to escape from this method
	if (  $form_id < 1 ) return false;
	
	// apply filters to title
	$title = apply_filters( 'widget_title', $instance['title'] );
	
	// get form data
	$form = RGFormsModel::get_form_meta( $form_id );
	
	// before widget
	$echo = ! empty( $args['before_widget'] ) ? $args['before_widget'] : '';
	
	// add title if not empty
	$echo .= $title ? $args['before_title'] . $title . $args['after_title'] : '';

	// add scripts
	if ( ! $disable_scripts && ! is_admin() ) {
		ob_start();
		RGForms::print_form_scripts( $form, $ajax );
		$echo .= ob_get_clean();
	}

	// get form output
	$echo .= RGForms::get_form( $form_id, $showtitle, $showdescription, false, null, $ajax, $tabindex );

	// add after widget string
	$echo .= ! empty( $args['after_widget'] ) ? $args['after_widget'] : '';
	
	echo $echo;
}