adb6c49301
135 文件 19,211 处自动修复：空格→Tab 缩进、括号间距、 函数声明空格、前置自增、尾逗号等纯格式化改动。 零逻辑变更，php -l + token 级对比验证通过。 新增 phpcs.xml.dist / phpstan.neon.dist 项目配置。 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
63 lines
1.6 KiB
PHP
63 lines
1.6 KiB
PHP
<?php
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/**
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* Cost Estimator - 缓存成本节省估算
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*
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* 基于缓存命中次数和平均请求成本估算节省金额。
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*
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* @package WPMind\Modules\ExactCache
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* @since 1.0.0
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*/
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declare(strict_types=1);
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namespace WPMind\Modules\ExactCache;
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final class CostEstimator {
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/**
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* 获取估算的成本节省
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*
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* 计算公式：节省金额 = 缓存命中次数 × 平均每次请求成本
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*
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* @return array{total_usd: float, total_cny: float, avg_cost_per_request: float}
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*/
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public static function get_estimated_savings(): array {
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$cache_stats = \WPMind\Cache\ExactCache::instance()->get_stats();
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$hits = (int) ( $cache_stats['hits'] ?? 0 );
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if ( $hits === 0 ) {
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return [
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'total_usd' => 0.0,
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'total_cny' => 0.0,
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'avg_cost_per_request' => 0.0,
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];
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}
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// 从 UsageTracker 获取平均请求成本
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$usage_stats = [];
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if ( class_exists( '\WPMind\Modules\CostControl\UsageTracker' ) ) {
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$usage_stats = \WPMind\Modules\CostControl\UsageTracker::get_stats();
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}
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$total_cost = (float) ( $usage_stats['total']['cost_usd'] ?? 0.0 );
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$total_requests = (int) ( $usage_stats['total']['requests'] ?? 0 );
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if ( $total_requests === 0 ) {
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return [
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'total_usd' => 0.0,
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'total_cny' => 0.0,
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'avg_cost_per_request' => 0.0,
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];
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}
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$avg_cost = $total_cost / $total_requests;
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$saved_usd = $hits * $avg_cost;
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$saved_cny = $saved_usd * 7.2; // 近似汇率
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return [
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'total_usd' => round( $saved_usd, 4 ),
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'total_cny' => round( $saved_cny, 2 ),
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'avg_cost_per_request' => round( $avg_cost, 6 ),
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];
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}
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}
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