Export Wordpress Post by ID - by setting a temporary author, assigning it to the post, then reverting temp author

wp_export_post_by_id

<?php 

/* 
NOT TOTALLY FUNCTIONAL - NOT TOTALLY FUNCTIONAL - NOT TOTALLY FUNCTIONAL - YOU MAY HAVE TO WORK IT INTO YOUR PROJECT DIFFERENTLY
*/
add_action('admin_init', function(){

	if( isset( $_GET['di_export'] ) ) :

		// post id = 177 // Collision Center
		$post_id = 877;

		// insert a new temp user
		$userdata = array(
		    'user_login'  	=>  '_di_export',
		    'user_url'    	=>  '',
		    'user_pass'   	=>  'awesome1234',  // When creating an user, `user_pass` is expected.
		    'role'			=>	'administrator'
		);

		$_temp_author_id = wp_insert_user( $userdata );
		
		// get the original post by ID
		$post = get_post($post_id);
		// set the start date to make sure we are only exporting a single post, and the correct post
		$start_date = date( 'Y-m', strtotime($post->post_date) );
		// set end date the same as start date to export only one post
		$end_date = $start_date;

		// grab the original author ID to revert original post author back
		$original_author_id = $post->post_author;

		// set the posts' author to the temporary one
		$post->post_author = $_temp_author_id;

		// update the post with temporary author
		$post_updated = wp_update_post($post);
		// if post was updated and a temp author ID exists, then export the post by corresponding ID
		if( $post_updated && $_temp_author_id ) :
			$args = array(
				'content' => 'page',
				'author' => $_temp_author_id,
				'start_date' => $start_date,
				'end_date' => $end_date
			);
			
			include_once(ABSPATH.'/wp-admin/includes/export.php');
			export_wp($args);
			// set the post author back to the original author
			$post->post_author = $original_author_id;

			// update/revert the post to how it was before exporting 
			$post_updated = wp_update_post($post);
			wp_delete_user( $_temp_author_id, $original_author_id );
			die();
		endif;
	endif;
});
// NOT TOTALLY FUNCTIONAL