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PHP 开发者每天都在使用 Laravel 和 Symfony 构建雄心勃勃的应用程序——但一旦涉及 AI，人们就会告诉他们应该转向 Python。本书证明，这并没有必要。

使用 PHP 构建 AI 应用程序 将一步步带你从零开始构建两个完整、可用于生产环境的 AI 应用：一个基于 Laravel 的智能客服代理，以及一个基于 Symfony 的 AI 内容生成流水线。两者都使用 PapiAI，这是一个面向 PHP 的开源库，零运行时依赖，支持 10 家 LLM 提供商，并具备完整的智能体运行时。

你将学习生产环境中真正重要的 AI 应用开发要点：实时流式响应、为智能体提供可查询数据库的工具、跨请求管理对话记忆、使用模式校验结构化输出、通过嵌入和向量检索构建 RAG 流水线、使用队列异步处理任务、防御提示注入、控制成本，以及自信地完成部署。

这不是一本 API 端点导览手册，而是一份关于架构、模式与实战经验的指南，讲清楚什么才能让一个演示原型成长为真正可部署的产品——并且全部使用你已经熟悉的语言来实现。

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