WP, php, functions.php: Widget area

functions.php

//functions.php  
function minima_widgets_init() {
  register_sidebar( array(
		'name'          => __( 'Sidebar', 'minima' ),
		'id'            => 'sidebar-1',
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h1 class="widget-title">',
		'after_title'   => '</h1>',
	) );
	register_sidebar( array(
		'name'          => __( 'Tweets', 'minima' ),
		'id'            => 'tweets-widget-area',
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h1 class="widget-title">',
		'after_title'   => '</h1>',
	) );
	register_sidebar( array(
		'name'          => __( 'Latest posts', 'minima' ),
		'id'            => 'latest-posts-widget-area',
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h1 class="widget-title">',
		'after_title'   => '</h1>',
	) );
}
add_action( 'widgets_init', 'minima_widgets_init' );

//index.php
  							<?php 
								// Custom widget Area Start
								if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('Tweets') ) : ?>
								<p>Latest tweet example</p>
								<?php endif;
								// Custom widget Area End
								?>

  			<h3>LATESTS POSTS</h3>
					<?php 
					// Custom widget Area Start
					if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('Latest posts') ) : ?>
					<p>Latest tweet example</p>
					<?php endif;
					// Custom widget Area End
					?>