Get range of dates in an array

get-date-range.php

<?php

/**
 * Get Date Range
 *
 * @param string $start Start date in unix timestamp format
 * @param string $end End date in unix timestamp format
 * @return array Range of dates in an array
 */
function get_date_range( $start, $end ) {
  
    // Setup Dates
    $start_date = date('Y-m-d', $start);
    $end_date = date('Y-m-d', $end);

    // Get date range
    $period = new DatePeriod(
        new DateTime($start_date),
        new DateInterval('P1D'),
        new DateTime($end_date)
    );

    // Add dates to an array
    foreach ( $period as $value ) {
        $the_dates[] = $value->format('Y-m-d');
    }
  
    return ( is_array($the_dates) ? $the_dates : [] );
  
}