<?php

use Illuminate\Http\Request;

class AmountProcessor
{
    /**
     * 根據(jù)輸入字符串判斷其真實的數(shù)值類型（int, float, string）。
     *
     * @param string $amount 從請求中獲取的金額字符串
     * @return string 返回 'int', 'float', 或 'string'
     */
    private function getAmountType(string $amount): string
    {
        if (is_numeric($amount)) {
            // 如果是數(shù)字字符串，進一步判斷是整數(shù)還是浮點數(shù)
            if ((int) $amount == (float) $amount) {
                return "int"; // 例如 "99"
            }
            return "float"; // 例如 "99.9"
        }
        return "string"; // 例如 "NinteyNine"
    }

    public function run(Request $request)
    {
        $value = $request->input('amount'); // 使用 input() 方法獲取參數(shù)更規(guī)范

        // 調(diào)用自定義函數(shù)獲取實際類型
        $type = $this->getAmountType($value);

        switch ($type) {
            case 'float':
                // 執(zhí)行浮點數(shù)相關(guān)的邏輯
                echo "處理浮點數(shù): " . (float)$value . "\n";
                break;
            case 'int':
                // 執(zhí)行整數(shù)相關(guān)的邏輯
                echo "處理整數(shù): " . (int)$value . "\n";
                break;
            case 'string':
                // 執(zhí)行字符串相關(guān)的邏輯
                echo "處理字符串: " . $value . "\n";
                break;
            default:
                // 處理未知類型或錯誤情況
                echo "未知類型或無效輸入\n";
        }
    }
}

// 模擬請求
$request = new Request(['amount' => '99.9']);
(new AmountProcessor())->run($request); // 輸出: 處理浮點數(shù): 99.9

$request = new Request(['amount' => '99']);
(new AmountProcessor())->run($request); // 輸出: 處理整數(shù): 99

$request = new Request(['amount' => 'NinteyNine']);
(new AmountProcessor())->run($request); // 輸出: 處理字符串: NinteyNine

$request = new Request(['amount' => '25.0']);
(new AmountProcessor())->run($request); // 輸出: 處理整數(shù): 25 (注意 PHP 的浮點數(shù)到整數(shù)轉(zhuǎn)換行為)

?>

<?php

use Illuminate\Http\Request;

class SimpleAmountProcessor
{
    public function run(Request $request)
    {
        $amount = $request->input('amount');

        if (is_numeric($amount)) {
            $numericAmount = (float) $amount;
            // 執(zhí)行所有數(shù)值類型（整數(shù)或浮點數(shù)）的共同邏輯
            echo "處理數(shù)值類型: " . $numericAmount . " (類型: " . gettype($numericAmount) . ")\n";
            // 例如：進行數(shù)學(xué)計算、存儲到數(shù)值型數(shù)據(jù)庫字段等
        } else {
            // 執(zhí)行非數(shù)值字符串的邏輯
            echo "處理非數(shù)值字符串: " . $amount . "\n";
            // 例如：存儲到文本型數(shù)據(jù)庫字段、錯誤提示等
        }
    }
}

// 模擬請求
$request = new Request(['amount' => '123.45']);
(new SimpleAmountProcessor())->run($request); // 輸出: 處理數(shù)值類型: 123.45 (類型: double)

$request = new Request(['amount' => '100']);
(new SimpleAmountProcessor())->run($request); // 輸出: 處理數(shù)值類型: 100 (類型: double)

$request = new Request(['amount' => 'OneHundred']);
(new SimpleAmountProcessor())->run($request); // 輸出: 處理非數(shù)值字符串: OneHundred

?>