for ($i = 0; $i < $numberOfPosts; $i++) {
   global $wpdb;
    $wpdb->query( 'SET autocommit = 0;' );
    $wpdb->query( $wpdb->prepare("INSERT IGNORE INTO `".$wpdb->prefix."posts`(post_author,post_content,post_title,comment_status,ping_status,post_name,post_type) VALUES(%s,%s,%s,'closed','closed',%s,'post')", $user_ID,$newPost['post_content'],$newPost['post_title'],$newPost['post_name']));
}
        $wpdb->query( 'COMMIT;' );