Post Featured Image Shortcode

shortcode.php

add_shortcode( 'cg_post_featured_image', function( $attrs ) {
	$args = wp_parse_args( $attrs, array(
		'linked' => 'yes',
	) );
	
	$image = get_the_post_thumbnail( $post, $settings->size, array(
		'itemprop' => 'image',
		'class'    => 'post-featured-image',
	) );

	if ( $image && 'no' != $args['linked'] ) {

		$href  = get_the_permalink();
		$title = the_title_attribute( array(
			'echo' => false,
		) );

		return "<a href='{$href}' title='{$title}'>{$image}</a>";
	} else {
		return $image;
	}
} );