course/app/functions.php

<?php
/**
 * Here is your custom functions.
 */


if (!function_exists('generate_order_no')) {
    /**
     * 生成 前缀+24位数字的订单号
     * @param string $prefix 前缀
     * @return string
     */
    function generate_order_no($prefix = '')
    {
        $randLen = 6;
        $id = base_convert(substr(uniqid(), 0 - $randLen), 16, 10);
        if (strlen($id) > 10) {
            $id = substr($id, -10);
        } elseif (strlen($id) < 10) {
            $rLen = 10 - strlen($id);
            $id = $id . rand(pow(10, $rLen - 1), pow(10, $rLen) - 1);
        }
        $dateTimeStr = date('YmdHis');
        return $prefix . $dateTimeStr . $id;
    }
}


/**
 * 记录日志，默认存放路径为：{$config_path}/logs/{$dir_name}/ddddmm/d.log
 * @dir_name logs/下的目录路径
 * @data 日志数据
 */
if (!function_exists('raw_log')) {
    function raw_log(string $dir_name, $data)
    {
        $log_path = runtime_path() . "/logs/{$dir_name}/" . date('Ym');

        if (!is_dir($log_path)) {
            mkdir($log_path, 0777, true);
        }
        $log_path .= '/' . date('d') . '.log';
        $log = new Monolog\Logger($dir_name);
        $log->pushHandler(new \Monolog\Handler\StreamHandler($log_path, \Monolog\Logger::INFO));
        $log->info('', $data);
    }
}


/**
 * @desc 生成随机字符串
 * @param $len
 * @return string
 * @throws \Random\RandomException
 */
if (!function_exists('random_str')) {

    function random_str($len = 32)
    {
        return bin2hex(random_bytes(round($len / 2)));
    }
}

if (!function_exists('get_dates_in_month')) {
    /**
     * @desc 获取月份所有天
     * @param $year
     * @param $month
     * @return array
     */
    function get_dates_in_month($year, $month) {
        $dates = [];
        $firstDayOfMonth = new DateTime("$year-$month-01");
        $lastDayOfMonth = clone $firstDayOfMonth;
        $lastDayOfMonth->modify('last day of this month');

        for ($currentDate = $firstDayOfMonth; $currentDate <= $lastDayOfMonth; $currentDate->modify('+1 day')) {
            $dates[] = $currentDate->format('Y-m-d');
        }

        return $dates;
    }
}

if(!function_exists('is_time_cross')){
    /**
     * PHP计算多个时间段是否有交集（边界重叠不算）
     * @param ...$timePeriods
     * @return bool|mixed
     */
    function is_time_cross(array $timePeriods) {

        $timePeriods = array_values($timePeriods);
        // 将时间字符串转换为时间戳
        $timePeriods = array_map(function ($period) {
            extract($period);

            return [
                'begin' => strtotime($beginTime),
                'end' => strtotime($endTime)
            ];
        }, $timePeriods);

        // 递归函数来检查时间段是否有交集
        $checkCross = function ($index, $timePeriods) use (&$checkCross) {
            if ($index === count($timePeriods) - 1) {
                return true; // 最后一个时间段，没有交集
            }

            for ($i = $index + 1; $i < count($timePeriods); $i++) {
                if ($timePeriods[$index]['end'] > $timePeriods[$i]['begin'] && $timePeriods[$i]['end'] > $timePeriods[$index]['begin']) {
                    return false; // 有交集
                }
            }

            return $checkCross($index + 1, $timePeriods); // 递归检查下一个时间段
        };

        return $checkCross(0, $timePeriods); // 从第一个时间段开始检查
    }
}

//写一个检测字符串是否包含中文的函数
if(!function_exists('check_chinese_chars')){
    function check_chinese_chars($str){
        return preg_match('/[\x{4e00}-\x{9fa5}]/u', $str);
    }
}