PHP项目数字阿根廷比索与eARS

我来帮你整理PHP项目中处理阿根廷比索（ARS）和电子阿根廷比索（eARS）的相关内容。

货币表示与转换

基础货币类定义

<?php
class ArgentinePeso {
    // 阿根廷比索 (ARS)
    private float $amount;
    public function __construct(float $amount = 0.0) {
        $this->amount = $amount;
    }
    public function getAmount(): float {
        return $this->amount;
    }
    public function format(): string {
        return '$' . number_format($this->amount, 2, ',', '.');
    }
}
class eArgentinePeso {
    // 电子阿根廷比索 (eARS)
    private float $amount;
    public function __construct(float $amount = 0.0) {
        $this->amount = $amount;
    }
    public function getAmount(): float {
        return $this->amount;
    }
    public function format(): string {
        return 'e$' . number_format($this->amount, 2, ',', '.');
    }
}

汇率转换器

<?php
class ARSConverter {
    private float $exchangeRate;
    public function __construct(float $exchangeRate = 1.0) {
        // 1 eARS = X ARS (根据实时汇率)
        $this->exchangeRate = $exchangeRate;
    }
    public function arsToEars(ArgentinePeso $ars): eArgentinePeso {
        $earAmount = $ars->getAmount() / $this->exchangeRate;
        return new eArgentinePeso($earAmount);
    }
    public function earsToArs(eArgentinePeso $ears): ArgentinePeso {
        $arAmount = $ears->getAmount() * $this->exchangeRate;
        return new ArgentinePeso($arAmount);
    }
    public function getExchangeRate(): float {
        return $this->exchangeRate;
    }
}

数据库存储方案

<?php
// 数据库表结构
// CREATE TABLE transactions (
//     id INT AUTO_INCREMENT PRIMARY KEY,
//     amount_ars DECIMAL(15,2),
//     amount_ears DECIMAL(15,2),
//     currency_type ENUM('ARS', 'EARS'),
//     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
// );
class TransactionModel {
    private PDO $db;
    public function saveTransaction(float $amount, string $currencyType): bool {
        $stmt = $this->db->prepare("
            INSERT INTO transactions (amount_ars, amount_ears, currency_type)
            VALUES (?, ?, ?)
        ");
        if ($currencyType === 'ARS') {
            return $stmt->execute([$amount, 0, 'ARS']);
        } else {
            return $stmt->execute([0, $amount, 'EARS']);
        }
    }
    public function getTransactions(): array {
        $stmt = $this->db->query("SELECT * FROM transactions ORDER BY created_at DESC");
        return $stmt->fetchAll(PDO::FETCH_ASSOC);
    }
}

格式化显示函数

<?php
function formatArs(float $amount): string {
    if ($amount >= 0) {
        return '$' . number_format($amount, 2, ',', '.');
    } else {
        return '-$' . number_format(abs($amount), 2, ',', '.');
    }
}
function formatEars(float $amount): string {
    if ($amount >= 0) {
        return 'e$' . number_format($amount, 2, ',', '.');
    } else {
        return '-e$' . number_format(abs($amount), 2, ',', '.');
    }
}
// 使用示例
echo formatArs(1250.50);    // $1.250,50
echo formatEars(850.75);    // e$850,75

API汇率获取

<?php
class ExchangeRateAPI {
    private string $apiUrl = 'https://api.exchangerate-api.com/v4/latest/ARS';
    public function getEARSExchangeRate(): float {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $this->apiUrl);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $response = curl_exec($ch);
        curl_close($ch);
        $data = json_decode($response, true);
        // 假设API返回eARS汇率
        return $data['rates']['EARS'] ?? 1.0;
    }
}
// 或者使用缓存版本
class CachedExchangeRate {
    private string $cacheFile = 'exchange_rate_cache.json';
    private int $cacheTTL = 3600; // 1小时
    public function getRate(): float {
        if ($this->isCacheValid()) {
            $cache = json_decode(file_get_contents($this->cacheFile), true);
            return $cache['rate'];
        }
        $rate = $this->fetchFromAPI();
        $this->saveToCache($rate);
        return $rate;
    }
    private function isCacheValid(): bool {
        if (!file_exists($this->cacheFile)) {
            return false;
        }
        $cache = json_decode(file_get_contents($this->cacheFile), true);
        return (time() - $cache['timestamp']) < $this->cacheTTL;
    }
    private function saveToCache(float $rate): void {
        $data = [
            'rate' => $rate,
            'timestamp' => time()
        ];
        file_put_contents($this->cacheFile, json_encode($data));
    }
    private function fetchFromAPI(): float {
        // 实现API调用
        return 1.0; // 默认值
    }
}

完整使用示例

<?php
// 使用示例
$ars = new ArgentinePeso(1500.50);
$ears = new eArgentinePeso(1000.00);
$converter = new ARSConverter(1.5); // 1 eARS = 1.5 ARS
// 转换
$convertedEars = $converter->arsToEars($ars);
$convertedArs = $converter->earsToArs($ears);
echo "ARS金额: " . $ars->format() . "\n";
echo "转换为eARS: " . $convertedEars->format() . "\n";
echo "eARS金额: " . $ears->format() . "\n";
echo "转换为ARS: " . $convertedArs->format() . "\n";
// 格式化输出
$price = 12345.67;
echo formatArs($price);   // $12.345,67
echo formatEars($price);  // e$12.345,67

注意事项

1. 精度处理：使用DECIMAL或BCMath处理财务计算
2. 实时汇率：建议使用外部API获取最新汇率
3. 缓存机制：避免频繁API调用
4. 国际化：注意不同的数字格式标准

这个实现涵盖了阿根廷比索（ARS）和电子阿根廷比索（eARS）的基本处理和转换功能。