Get WordPress theme details which are hosted on wordpress.org though API call

wp_theme_details.php

<?php
/**
 * Get wordpress.org Theme Details
 *
 * @see https://codex.wordpress.org/WordPress.org_API#Themes
 */

/**
 * Show Theme Details
 *
 * @param $theme_slug string  Slug of the theme of wordpress.org
 * @return void
 */
function wp_theme_details( $theme_slug = 'twentyseventeen' ) {

	// Fire request.
	$request = wp_remote_get( 'https://api.wordpress.org/themes/info/1.1/?action=theme_information&request[slug]=' . $theme_slug );

	if( is_wp_error( $request ) ) {
		echo 'Error!';
	}

	// Get body content.
	$body          = wp_remote_retrieve_body( $request );
	$theme_details = json_decode( $body );

	// Print Details.
	echo '<pre>';
	print_r( $theme_details );
	echo '</pre>';
}

// Function call.
wp_theme_details( 'twentyseventeen' );