get_post_timestamp

The timeline below displays how wordpress function get_post_timestamp has changed across different WordPress versions. If a version is not listed, refer to the next available version below.

WordPress Version: 6.1

/**
 * Retrieves post published or modified time as a Unix timestamp.
 *
 * Note that this function returns a true Unix timestamp, not summed with timezone offset
 * like older WP functions.
 *
 * @since 5.3.0
 *
 * @param int|WP_Post $post  Optional. Post ID or post object. Default is global `$post` object.
 * @param string      $field Optional. Published or modified time to use from database. Accepts 'date' or 'modified'.
 *                           Default 'date'.
 * @return int|false Unix timestamp on success, false on failure.
 */
function get_post_timestamp($post = null, $field = 'date')
{
    $datetime = get_post_datetime($post, $field);
    if (false === $datetime) {
        return false;
    }
    return $datetime->getTimestamp();
}

WordPress Version: 5.3

/**
 * Retrieve post published or modified time as a Unix timestamp.
 *
 * Note that this function returns a true Unix timestamp, not summed with timezone offset
 * like older WP functions.
 *
 * @since 5.3.0
 *
 * @param int|WP_Post $post  Optional. WP_Post object or ID. Default is global `$post` object.
 * @param string      $field Optional. Published or modified time to use from database. Accepts 'date' or 'modified'.
 *                           Default 'date'.
 * @return int|false Unix timestamp on success, false on failure.
 */
function get_post_timestamp($post = null, $field = 'date')
{
    $datetime = get_post_datetime($post, $field);
    if (false === $datetime) {
        return false;
    }
    return $datetime->getTimestamp();
}