php 生成日期区间

<?php
function generateDateRange($startDate, $endDate) {
    $start = new DateTime($startDate);
    $end = new DateTime($endDate);
    $interval = new DateInterval('P1D'); // 每天

    $dates = [];
    while ($start <= $end) {
        $dates[] = $start->format('Y-m-d');
        $start->add($interval);
    }

    return $dates;
}

$startDate = '2023-01-01';
$endDate = '2023-01-10';
$dateRange = generateDateRange($startDate, $endDate);

print_r($dateRange);
?>

$start = new DateTime('2023-01-01'); // 正确
$start = new DateTime('01-01-2023'); // 错误，格式不匹配

while ($start <= $end) { // 确保循环条件正确
    $dates[] = $start->format('Y-m-d');
    $start->add($interval); // 确保日期间隔设置正确
}

$date = new DateTime('2023-01-01', new DateTimeZone('Asia/Shanghai'));