Create a new post with custom post id and custom post name

insertpost.php

$post = array(
'import_id'         =>  9999,
'comment_status'    =>  'open',
'post_content'      =>  'hi world!',
'post_name'         =>  'title_1',
'post_status'       =>  'publish',
'post_title'        =>  'your title',
'post_type'         =>  'post',
);  

echo $post_id = wp_insert_post($post);