[WordPress] Display Gists as if they were real WordPress Posts (without saving them to database)

WP_gists_as_wordpress_posts.php

<?php

// This will display Gists as if they were real WP posts, so you can display them mixed with real ones too
// This will NOT add the Gists as real posts in your DB, you won't see them in your backend

/* --------------------------------------
|
|	Real Posts Loop
|
|---------------------------------------*/

$blog_args = array(
	'post_type' => 'post',
	'suppress_filters' => true,
	'posts_per_page' => 3,
	'orderby' => 'date',
);
$blog_loop = new WP_Query( $blog_args );

/* --------------------------------------
|
|	Get Gists
|
|---------------------------------------*/

// Get the Cache if exists, if not run the cUrl
//delete_transient('gists_as_posts'); // in case you need to get rid of transient quickly
if(get_transient('gists_as_posts') === false) {
	$gist_username = 'Jany-M'; // change this
	$url = 'https://api.github.com/users/'.$gist_username.'/gists';
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt( $ch, CURLOPT_USERAGENT, 'Gist-as-Post' );
	$result = curl_exec($ch);
	curl_close($ch);
	$gists = json_decode($result, true);
	// Cache results
	set_transient('gists_as_posts', $gists, 1 * WEEK_IN_SECONDS); // Set the time constant to whatever feels best https://codex.wordpress.org/Easier_Expression_of_Time_Constants
}
$gists = get_transient('gists_as_posts');

/* --------------------------------------
|
|	Create "WP Gists"
|
|---------------------------------------*/

// Get Latest WP ID
$last = wp_get_recent_posts( '1');
$id_post = $last['0']['ID'];

// Prepare Gists array for WP
$gists_array = array();

// Make each Gist like a fake WP Post
$i = 0;
foreach ($gists as $key => $value) :
	$id_post++;
	$i++;
	// Make dates like WP
	$created = str_replace('T',' ', $value["created_at"]);
	$created = str_replace('Z','', $created);
	$updated = str_replace('T',' ', $value["updated_at"]);
	$updated = str_replace('Z','', $updated);
	// Create WP_Post objects
	$new_gist = new WP_Post((object)array(
	    'ID'           => $id_post,
	    'post_title'   => $value["description"],
	    'post_name'   => sanitize_title($value["description"]),
	    'post_content' => '<script src="https://gist.github.com/'.$gist_username.'/'.$value['id'].'.js"></script>',
	    'post_date' => $created,
	    'post_date_gmt' => $updated,
	    'post_status' => 'publish',
	    'post_author' => '7', // change this to your appropriate WP user id
	    'post_type' => 'post', // you can set this to whatever you want
	    'guid' => $value["html_url"],
	));
	// Add fake Gist WP post to Gists array
	$gists_array[] = $new_gist;
	// Set max Gists to use
	if($i==3) break;
endforeach;

/* --------------------------------------
|
|	Merge with real Loop and finalize
|
|---------------------------------------*/

// Final Query - Merge the Real Post Query with the fake Gists WP posts
$all_posts_in_one = array();
$all_posts_in_one = array_merge( $blog_loop->posts, $gists_array );

// Sort all posts by creation date
usort($all_posts_in_one, create_function('$a,$b', 'return strcmp($b->post_date, $a->post_date);') );

/* --------------------------------------
|
|	Display your final Loop
|
|---------------------------------------*/

foreach ($all_posts_in_one as $post) : ?>

	<h3><?php echo $post->post_title; ?></h3>
	<span><?php echo date(get_option('date_format'), strtotime($post->post_date)); ?></span>
	<!-- <p><?php //echo $post->post_content; ?></p> -->

<?php endforeach; wp_reset_postdata(); ?>