Wordpress ajax response snippet

wp-ajax-get-posts.php

<?php

function getPosts()
{
    $args = [
        'post_type' => 'post',
        'posts_per_page' => 5,
        'paged' => $_GET['page'],
    ];

    if ($_GET['category']) {
        $args['category_name'] = $_GET['category'];
    }

    $query = new WP_Query($args);

    while ($query->have_posts()) {
        $query->the_post();

        $posts[] = [
            'id' => get_the_ID(),
            'title' => get_the_Title(),
            'excerpt' => get_the_excerpt(),
            'link' => get_the_permalink(),
            'time' => get_the_time('Y m d'),
        ];

    }

    $pages = $query->max_num_pages;
    
    $data = array(
        'posts' => $posts,
        'pages' => $pages,
    );

    header("Content-type: application/json");
    echo json_encode($data);
    die;
}

add_action('wp_ajax_getPosts', 'getPosts');
add_action('wp_ajax_nopriv_getPosts', 'getPosts');