PHP – Multiple variables in insert post array

$post_id = wp_insert_post(
    array(
        'comment_status'    =>  'open',
        'ping_status'       =>  'closed',
        'post_author'       =>  $current_user->ID,
        'post_name'         =>  $slug,
        'post_title'        =>  $pollq_question,
        'post_status'       =>  'publish',
        'post_type'         =>  'post',
        'post_content'      =>  $_POST['poll-description'] . '[poll id=' . $latest_pollid . ']'
    )
);