php$apikey = 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;$subscription_url = httpsapiopenaicomv1dashboardbillingsubscription;$headers = array Authorization Bearer $apikey Content-Type

array( "header" => implode("\r\n", $headers), "method" => "GET" ) ))); if ($subscription_response === false) { return $subscription_response; } $subscription_data = json_decode($subscription_response, true); $total = $subscription_data["hard_limit_usd"]; // Get billing data $start_date = date("Y-m-d", strtotime("-99 days")); $end_date = date("Y-m-d", strtotime("+1 day")); $billing_url = "https://api.openai.com/v1/dashboard/billing/usage?start_date={$start_date}&end_date={$end_date}"; $billing_response = file_get_contents($billing_url, false, stream_context_create(array( "http" => array( "header" => implode("\r\n", $headers), "method" => "GET" ) ))); if ($billing_response === false) { return $billing_response; } $billing_data = json_decode($billing_response, true); $total_usage = $billing_data["total_usage"] / 100; $daily_costs = $billing_data["daily_costs"]; $days = min(5, count($daily_costs)); $recent = "最近{$days}天使用情况\n"; for ($i = 0; $i < $days; $i++) { $cur = $daily_costs[count($daily_costs) - $i - 1]; $date = date("Y-m-d", $cur["timestamp"]); $line_items = $cur["line_items"]; $cost = 0; foreach ($line_items as $item) { $cost += $item["cost"]; } $recent .= "\t{$date}\t" . ($cost / 100) . "\n"; } // Return the results return "\n总额:\t{$total:.4f}\n" . "已用:\t{$total_usage:.4f}\n" . "剩余:\t" . ($total - $total_usage) . "\n" . "\n{$recent}"; ?>

上面的代码已经进行了一些优化，主要包括：
1. 将两个API请求的代码分开，使得逻辑更清晰。
2. 将API请求的结果判断改为严格比较，以确保正确处理请求错误。
3. 修复了返回结果中的换行符问题，使输出更整齐。
4. 将浮点数格式化为小数点后四位。
5. 使用更具描述性的变量名，提高代码可读性。
6. 对代码进行了注释，方便理解和维护