php 生成一个函数，传入两个参数，时间范围和时间戳，判断该时间戳是否在经营时间内

function isWithinOperatingHours($timeRange, $timestamp) {
    $startTime = strtotime($timeRange[0]);
    $endTime = strtotime($timeRange[1]);

    if ($timestamp >= $startTime && $timestamp <= $endTime) {
        return true;
    } else {
        return false;
    }
}

// 用法示例
$timeRange = ["9:00", "18:00"]; // 经营时间范围
$timestamp = strtotime("now"); // 要检查的时间戳

if (isWithinOperatingHours($timeRange, $timestamp)) {
    echo "时间戳在经营时间内";
} else {
    echo "时间戳不在经营时间内";
}