php_mysql_面试题_2011_03-28
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标题“php_mysql_面试题_2011_03-28”表明这是一个关于PHP与MySQL面试题目的集合,可能包含2011年3月28日时热门的或者经典的面试问题。PHP是一种广泛使用的开源脚本语言,尤其在web开发中,而MySQL则是一种流行的开源关系型数据库管理系统。这个压缩包很可能是为了帮助应聘者准备PHP和MySQL相关的职位面试。 描述中的链接指向了一篇博客文章,但由于没有实际内容,我们无法直接获取具体的知识点,但可以推测博客可能包含了面试题解析、常见问题和解答策略等内容。 标签“源码”和“工具”提示我们,这个压缩包可能还包含了实际的代码示例或用于辅助理解的实用工具。源码可能涉及到PHP和MySQL的交互,例如查询构造、数据处理等;工具可能包括数据库管理工具、代码编辑器配置或其他有助于开发和调试的资源。 从文件名“20110328_php”来看,这可能是一个文件,包含了那天讨论的PHP相关主题,或者是那天更新的PHP学习资料。 基于以上信息,我们可以深入探讨一些PHP和MySQL面试中常见的知识点: 1. PHP基础: - 变量声明:了解如何声明不同类型的变量(如 `$var = "string"`,`$num = 123`)。 - 数据类型:熟悉PHP的基本数据类型,如字符串、整型、浮点型、数组、对象、布尔型和NULL。 - 控制结构:掌握条件语句(if/else,switch/case)和循环(for,while,do/while,foreach)的用法。 - 函数:理解函数的定义、参数传递和返回值。 2. MySQL基础: - 数据库创建与操作:包括创建、删除、修改数据库以及表结构。 - SQL语句:SELECT、INSERT、UPDATE、DELETE等基本操作,以及JOIN、WHERE、GROUP BY、HAVING等子句的使用。 - 数据类型:了解MySQL中各种数据类型,如INT、VARCHAR、DATE等。 -索引:理解索引的作用,包括主键索引、唯一索引、全文索引等。 3. PHP与MySQL交互: - PDO(PHP Data Objects)和mysqli扩展:两者都是PHP连接MySQL的接口,理解它们的区别和应用场景。 - SQL注入:了解什么是SQL注入,如何预防,比如使用预编译语句或参数绑定。 - 错误处理和事务:理解如何在PHP中处理MySQL错误,以及事务的使用。 4. 高级话题: - PHP性能优化:了解如何通过缓存(如APC,Memcached,Redis)、减少数据库查询、优化代码结构来提高性能。 - 安全性:理解XSS、CSRF等安全威胁,以及如何防范。 - OOP(面向对象编程):类、对象、继承、封装、多态的概念和应用。 这些知识点通常会在PHP和MySQL的面试中被问到,准备这些内容可以帮助应聘者在面试中表现出色。如果压缩包中有具体的题目和答案,那将是对这些知识点更深入的学习和复习。
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