Wordpress Secret API Add Article

<?php
//20 June 2024 - @willygoid
//Place this file to root directory of wordpress cms
//Usage: Parameter to post 'key' => 'mi77i', 'title' => 'your title', 'content' => 'your content', 'date' => '20-06-2024', 'tags' => 'your post tags', 'type' => 'article'
define('WP_USE_THEMES', false);
require_once("wp-load.php");
$key='mi77i';
if($_POST['key']==$key){
    $categorys=explode(',',$_POST['category']);
    $category=array();
    for($x=1;$x<count($categorys);$x++) {
     $category[$x-1]=get_cat_ID($categorys[$x]);
    }
    $info = array(
    'post_title' => $_POST['title'],
    'post_content' => $_POST['content'],
    'post_status' => 'publish',
    'post_author' => 1, //Author ID of the published article, 1 is the administrator
    'post_date' => $_POST['date'],
    'tags_input' => $_POST['tags'],
    'post_category' => $category,
    'post_type' => $_POST['type']
    );
    wp_insert_post( $info );
}