WORDPRESS: Create new post with meta data

new-post.php

<?php

# Credits: https://wordpress.stackexchange.com/questions/106973/wp-insert-post-or-similar-for-custom-post-type

$post_id = wp_insert_post(array (
   'post_type' => 'your_post_type',
   'post_title' => $your_title,
   'post_content' => $your_content,
   'post_status' => 'publish',
   'comment_status' => 'closed',   // if you prefer
   'ping_status' => 'closed',      // if you prefer
));

if ($post_id) {
   // insert post meta
   add_post_meta($post_id, '_your_custom_1', $custom1);
   add_post_meta($post_id, '_your_custom_2', $custom2);
   add_post_meta($post_id, '_your_custom_3', $custom3);
}

?>