vendor/topthink/think-helper/src/helper.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------

use think\Collection;
use think\helper\Arr;

if (!function_exists('throw_if')) {
    /**
     * 按条件抛异常
     *
     * @param mixed            $condition
     * @param Throwable|string $exception
     * @param array            ...$parameters
     * @return mixed
     *
     * @throws Throwable
     */
    function throw_if($condition, $exception, ...$parameters)
    {
        if ($condition) {
            throw (is_string($exception) ? new $exception(...$parameters) : $exception);
        }

        return $condition;
    }
}

if (!function_exists('throw_unless')) {
    /**
     * 按条件抛异常
     *
     * @param mixed            $condition
     * @param Throwable|string $exception
     * @param array            ...$parameters
     * @return mixed
     * @throws Throwable
     */
    function throw_unless($condition, $exception, ...$parameters)
    {
        if (!$condition) {
            throw (is_string($exception) ? new $exception(...$parameters) : $exception);
        }

        return $condition;
    }
}

if (!function_exists('tap')) {
    /**
     * 对一个值调用给定的闭包，然后返回该值
     *
     * @param mixed         $value