php和mysqlweb开发
基于PHP_MySQL的网站开发
基于PHP+MySQL 的网站开发2009年第31卷第6期总第180期物流工程与管理LOGISTICS ENGINEERING AND MANAGEMENT□肖维明(广州市信息工程职业学校,广东广州510610)【摘要】PHP 是一种跨平台的开放源代码的服务器端嵌入式脚本语言,利用PHP ,我们可以轻松地进行Web 开发,轻松地制作动态网站、新闻系统等;轻松地实现对文件及文件夹的操作;轻松地进行电子商务网站的开发、数据的加密;与数据库相关联等等。
文中将介绍常见的建立PHP+MySQL 运行环境的方法以及如何在PHP 中调用MySQL 存储过程和函数,并结合实例,谈谈基于PHP+MySQL 的网站开发。
【关键词】PHP ;MySQL ;网站开发【中图分类号】TP393【文献标识码】B【文章编号】1674-4993(2009)06-0090-03Website Development Based on PHP+MySQL□XIAO Wei-ming(GuangZhou Information Engineering Vocation School Guangzhou 510610,China )【Abstract 】PHP is an open source cross-platform server-side embedded scripting language,we can easily implement Web development and make dynamic sitenews systems with it,besids that,PHP can be easily used in the operation of document and folder,the development of e-commerce and data encryption as well as associated with the database,and so on.This article intro -duces the establishment of common running MySQL +PHP environment and how to call php in the MySQL stored procedures and functions,combined with examples like the PHP +MySQL-based web site development.【Key words 】PHP;MySQL;website development 【收稿日期】2009-05-17【作者简介】肖维明(1964-),男,汉族,广东梅县人,大学本科,广州市信息工程职业学校计算机讲师,研究方向:计算机专业课程教学方法,计算机网络管理技术、方法和实施。
PHP+MySQL开发实例教程教学设计
PHP+MySQL开发实例教程教学设计
引言
作为一个网站开发者,无论是从事前端开发还是后端开发,都离不开 PHP 和MySQL。
因此,学习 PHP 和 MySQL 的开发技能是非常重要的。
本文将介绍一些实例教程来帮助初学者熟悉 PHP 和 MySQL 的开发过程。
教学设计
目标
通过本教程,学生能够:
•熟悉 PHP 和 MySQL 开发基本知识
•能够独立完成简单的 PHP 和 MySQL 网站开发工作
学时安排
本教程将分为以下四个部分,每个部分大约需要 2-3 周的时间进行教学和实践。
1.PHP 和 MySQL 基础知识
2.PHP 和 MySQL 数据库连接
3.PHP 和 MySQL 数据库查询
4.PHP 和 MySQL 网站开发
教学内容
第一部分:PHP 和 MySQL 基础知识
本部分教学内容主要包括以下内容:
1。
php+mysql活页式实训手册
php+mysql活页式实训手册PHP+MySQL是一种常用的Web开发技术组合,能够实现动态网站的设计与开发。
活页式实训手册旨在帮助初学者了解PHP+MySQL的基本原理和使用方法,并通过实际案例进行实训,从而提升学习者的实际操作能力。
以下是关于PHP+MySQL活页式实训手册的详细介绍。
一、PHP简介PHP是一种广泛使用的开源脚本语言,用于Web开发和程序设计。
它可以嵌入HTML中,并通过与MySQL等数据库的交互,实现动态的网页内容生成。
PHP代码在服务器端执行,生成的结果再发送给客户端浏览器。
在实训手册中,我们将介绍PHP的语法、数据类型、运算符、流程控制语句等基本知识,并通过一系列实例来演示如何使用PHP进行数据处理、表单验证、文件操作等常见的Web开发任务。
二、MySQL简介MySQL是一种流行的关系型数据库管理系统,也是开源软件,可以独立使用或与PHP等编程语言结合使用。
MySQL以其高性能、稳定可靠和易于使用而受到广泛的关注和应用。
在实训手册中,我们将介绍MySQL的基本知识,包括数据库的设计、表的创建与管理、数据的插入、查询、更新和删除等操作。
同时,我们还将介绍MySQL的高级特性,如数据库连接池、存储过程、触发器等,以及优化数据库性能的一些建议。
三、实训案例在实训手册中,我们将提供多个实训案例,涵盖从简单到复杂的各种应用场景。
这些案例将帮助学习者逐步掌握PHP+MySQL的使用技巧,并了解如何将二者结合起来进行Web应用的开发。
例如,我们可以从一个简单的用户注册登录系统开始,通过实例介绍如何使用PHP+MySQL来实现用户的注册、登录、密码找回等功能。
然后,我们可以通过一个在线商城的案例来学习如何处理购物车、订单管理等常见的电商功能。
最后,我们还可以通过一个论坛或博客的案例来演示如何实现用户的帖子发布、评论等功能。
通过这些实训案例,学习者可以逐步了解PHP+MySQL的各个方面,从而在实际的Web开发项目中具备一定的技能和经验。
PHP和MySQL Web开发(原书第3版)中文版PDF
3.10.3 统计数组元素个数:count()、sizeof()和array_count_values() 73
3.10.4 将数组转换成标量变量:extract() 73
3.11 进一步学习 75
4.6 正则表达式的介绍 88
4.6.1 基础知识 88
4.6.2 字符集和类 88
4.6.3 重复 89
4.6.4 子表达式 89
4.6.5 子表达式计数 90
4.6.6 定位到字符串的开始或末尾 90
4.6.7 分支 90
下载地址:/image/php.rar
我的空间有限啊
希望版主能补传啊 我果断时间就要删掉了哦 呵呵
抓紧时间 下载吧
别抢沙发啊 留着备用啊
下载地址在2楼啊 有钱的给点钱啊 呵呵 穷!
作者:Luke Welling 编著
4.2.3 格式化字符串以便存储:addslashes()和stripslashes() 81
4.3 用字符串函数连接和分割字符串 82
4.3.1 使用函数explode()、implode()和join() 82
4.3.2 使用strtok()函数 83
1.3 在HTML中嵌入PHP 4
1.3.1 使用PHP标记 5
1.3.2 PHP标记风格 5
1.3.3 PHP语句 6
1.3.4 空格 6
1.3.5 注释 7
1.4 添加动态内容 8
1.4.1 调用函数 8
5.11 从函数返回一个值 111
5.12 实现递归 113
PHPWeb技术MySQL数据库介绍课件
PHP与MySQL的交互
PHP通过MySQL扩展库 与MySQL数据库进行通
信
PHP可以使用MySQLi或 PDO等接口与MySQL数
据库进行交互
PHP可以执行SQL查询、 插入、更新和删除等操 作
PHP可以获取MySQL数 据库的错误信息和状态
信息
PHP可以设置MySQL数 据库的连接参数和选项
物联网:物联网 设备数据存储与 管理
游戏开发:游戏服 务器、游戏数据库 等游戏开发应用
PHP与MySQL的整 合
PHP与MySQL的连接
01 PHP提供了多种连接MySQL数据
02 连接MySQL数据库时,需要提供
库的方法,如mysql_connect()、
数据库服务器地址、用户名、密
mysqli_connect()和PDO。
MySQL数据库
MySQL简介
MySQL是一种开源的关系型 01 数据库管理系统
由瑞典MySQL AB公司开发, 02 后被Oracle公司收购
支持多种编程语言和操作系 03 统
广泛应用于各种Web应用和 04 网站开发
MySQL特点
01 开源:MySQL是开源数据库,可以免费 使用和修改
02 跨平台:MySQL支持多种操作系统,如 Windows、Linux和Mac OS X
PHP可以管理MySQL数 据库的用户和权限
PHP可以执行MySQL数 据库的备份和恢复操作
PHP可以执行MySQL数 据库的性能分析和优化
操作
PHP与MySQL的实际应用
01
网站开发:使用PHP和MySQL 构建动态网站
0 3 数据库管理:使用PHP和 MySQL进行数据库管理和操作
计算机外文翻译---基于PHP和MYSQL的网站设计和实现
译文二:基于PHP和MYSQL的网站设计和实现摘要PHP和MYSQL因为其免费以及开放源码已经成为主要的web开发工具。
作者就基于PHP和MYSQL开发网站进行开发环境问题的讨论。
关键词PHP;MYSQL;发展和实现。
1.介绍随着网络技术的发展,不可避免的带动各种企业传统营销与网络营销的增长。
其中最有效的方法是为他们的公司建立一个网站。
目前网站开发的主流平台包括LAMP(Linux操作系统,Apache网络服务器,MYSQL数据库,PHP编程语言),J2EE 和.NET商业软件。
因为PHP和MYSQL是免费的,开源等等,他们是为专业的IT 人士开发的。
从网站流量的角度来看,超过70%的网站流量是有LAMP提供的,这是最流行的网站开发平台。
在本文中,我们基于PHP和MYSQL设计了一个网站。
本文的组织如下。
第一节分析开发环境。
第二节中,我们提出基于PHP的开发模型。
然后,第四节是案例研究。
在第五节我们做出结论。
2.发展环境分析A.开发语言的选择,PHP&JSP是三个主流的网站开发语言,它们分别具有各自的优点和缺点,它们之间的比较见表1。
这个项目我们采用PHP作为开发语言的原因如下:免费的。
这个项目小,不需要使用支付开发平台如 and JSP。
强大的支持。
中小型网站,甚至一些大型网站如百度,新浪都把PHP作为开发语言,可以有组与解决在编程上的问题。
良好的可移植性。
尽管起初只能在Linux和Apache Web服务器环境中开发,现在已经可以移植到任何的操作系统,并兼容标准的Web服务器软件。
简单的语法。
PHP和C编程语言有许多的相似之处,所以会C的程序员很容易的就能使用PHP程序语言。
发展快速。
因为其源代码是开放的,所以PHP能迅速的发展。
B.构建开发环境目前有很多基于PHP的开发平台。
通常大多数开发人员喜欢LAMP开发环境。
那些有一定开发经验的可以通过选择相关的服务器,数据库管理系统和操作系统设置他们的开发平台。
php、mysql主要参考文献
php、mysql主要参考文献以下是一些关于PHP和MySQL的主要参考文献:1. "PHP and MySQL Web Development" by Luke Welling and Laura Thomson - 这本书是学习PHP和MySQL的经典指南,涵盖了从基础到高级的内容。
2. "Learning PHP, MySQL & JavaScript" by Robin Nixon - 这本书提供了一个全面的入门指南,涵盖了PHP、MySQL和JavaScript的基础知识。
3. "PHP Cookbook" by David Sklar and Adam Trachtenberg - 这本书是一本实用的参考书,提供了大量的PHP编程示例和解决方案。
4. "MySQL Explained: Your Step-by-Step Guide" by Andrew Comeau - 这本书解释了MySQL数据库的基本概念和操作,适合初学者。
5. "High Performance MySQL: Optimization, Backups, and Replication" by Baron Schwartz, Peter Zaitsev, and Vadim Tkachenko - 这本书讲解了如何优化、备份和复制MySQL数据库,适合有经验的开发人员。
6. "PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide" by Larry Ullman - 这本书提供了一个简洁的指南,教你如何使用PHP 和MySQL构建动态网站。
这些参考文献将为你提供关于PHP和MySQL的广泛知识,并帮助你更好地理解和应用它们。
关于php的书籍
关于php的书籍PHP是一种广泛使用的开源脚本语言,用于Web开发。
它可以嵌入HTML中,也可以与各种数据库配合使用。
如果您想深入了解PHP,这里有一些值得推荐的书籍。
1.《PHP和MySQL Web开发》这是一本非常受欢迎的PHP入门书籍。
它介绍了如何使用PHP和MySQL创建动态网站,并提供了许多实用的示例代码和项目。
此外,它还包括有关安全性、性能优化和面向对象编程等主题的深入讨论。
2.《高效PHP编程》这本书旨在帮助读者提高他们的PHP编程技能,以便更快地构建高质量的Web应用程序。
它涵盖了各种主题,包括调试、测试、性能优化、并发和缓存等。
此外,它还提供了许多实用技巧和最佳实践。
3.《深入理解PHP内核》如果您想成为一名真正的PHP专家,则需要深入了解其内部工作原理。
这本书提供了关于PHP内核结构、代码执行流程和内存管理等方面的详细信息。
虽然它可能对初学者来说有点困难,但对于有经验的开发人员来说,它是一本非常有价值的参考书。
4.《PHP 7编程实战》PHP 7是最新版本的PHP,它提供了许多新功能和改进。
这本书介绍了如何使用PHP 7构建现代Web应用程序,并涵盖了诸如类型声明、异常处理和匿名类等新特性。
此外,它还提供了有关性能优化和安全性的实用建议。
5.《Laravel框架入门》Laravel是一种流行的PHP框架,用于快速构建高质量的Web应用程序。
这本书介绍了如何使用Laravel进行开发,并涵盖了诸如路由、控制器、模型和视图等主题。
此外,它还提供了有关如何使用Laravel 进行测试和部署的详细指南。
总之,这些书籍涵盖了从入门到专业级别的各种主题,适合不同层次的读者。
无论您是初学者还是经验丰富的开发人员,都可以从中获得有价值的知识和技能。
适合初学者的php书籍
适合初学者的php书籍
对于初学者来说,选择一本适合自己的PHP书籍非常重要。
以
下是一些适合初学者的PHP书籍推荐:
1. 《PHP和MySQL Web开发》(作者,Luke Welling, Laura Thomson)这本书是PHP和MySQL方面的经典教材,适合初学者入门。
它涵盖了PHP基础知识以及与MySQL数据库交互的内容,对于想要
学习构建动态网站的人来说是一个很好的选择。
2. 《PHP对象与模式》(作者,Matt Zandstra)这本书专注
于PHP面向对象编程和设计模式,对于那些想要深入了解PHP的面
向对象特性和最佳实践的初学者来说是非常有用的。
3. 《Head First PHP & MySQL》(作者,Lynn Beighley, Michael Morrison)这本书以图文并茂的形式介绍了PHP和MySQL
的基础知识,适合初学者轻松上手。
4. 《PHP 7高级编程》(作者,Branko Ajzele)这本书适合
那些想要更深入地了解PHP 7新特性和高级主题的初学者,包括性
能优化、安全性等方面的内容。
以上是一些适合初学者的PHP书籍推荐,选择一本适合自己水平和需求的书籍,结合实际练习,相信能够帮助初学者快速入门和提高。
希望对你有所帮助。
使用PHP和MySQL进行Web开发
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后端开发指南:PHP与MySQL
后端开发指南:PHP与MySQL在当今数字化时代,网站和应用程序的开发需求日益增长。
而后端开发是实现这些网站和应用程序的重要组成部分之一。
本文将详细介绍后端开发的步骤,以及如何使用PHP和MySQL进行后端开发。
一、后端开发的步骤1.需求分析:在进行后端开发之前,首先需要明确项目的需求和目标。
与客户或团队沟通,确保了解项目的规模、功能和性能要求。
在这一阶段,可以使用流程图、原型设计等工具来帮助梳理需求。
2.数据库设计:根据项目需求,设计适合的数据库架构。
确定表结构、实体关系和字段类型等方面的细节。
这个阶段可以使用数据库设计工具来辅助工作。
3.编码:根据需求和数据库设计,开始进行编码工作。
选择适合项目的编程语言和框架,例如PHP。
根据设计模式和最佳实践,编写代码来实现后端逻辑。
4.测试和调试:在完成编码之后,进行测试和调试工作。
确保代码的正确性和稳定性。
可以使用单元测试和集成测试工具来辅助测试工作。
5.优化和性能调校:根据测试结果和实际使用情况,对代码进行优化和性能调校。
改善代码的执行效率和响应速度,提升用户体验。
6.部署和发布:在测试和优化完成后,部署后端代码到服务器上。
确保服务器环境和配置的正确性。
进行发布前的最后一次测试,确保网站或应用程序的正常运行。
二、PHP与MySQL的后端开发1.PHP:PHP是一种广泛使用的服务器端脚本语言,特别适合用于Web开发。
以下是使用PHP进行后端开发的一般步骤:a.安装PHP:首先需要在服务器上安装PHP解析器。
根据不同的操作系统,可以选择适合的PHP版本进行安装。
b.编辑PHP代码:使用文本编辑器编写PHP代码。
可以通过使用PHP的内置函数和语法来处理表单提交、数据库操作和其他后端逻辑。
c.保存和运行PHP脚本:将编写的PHP代码保存为.php文件,并将其放置在Web服务器的相应目录下。
通过访问URL可以运行PHP脚本并查看结果。
2.MySQL:MySQL是一种流行的开源关系型数据库管理系统。
php MYSQL动态网站编程
知新
1.PHP中的数组 2.PHP中的运算符 (重点) 3.If…else…语句的使用 (重点) 4.switch…case…语句的使用 5.while语句的使用 6.do … while 语句的使用 7.for 语句的使用 8.foreach语句的使用(重点)
第二章 数组
//定义数组: $数组名=array(元素1,元素2…..); 注意:这里的元素可以是单个的值的形势,也可以是一组键值 对的形势( 如:键=>值) $ary1=array(“值1”,”值2”);
从00-59
s 有前导0的秒
从00 -59
范例 :------Examples5.php
额外知识
格林威治时间 想一想: 现在我想在网上发布一条信息,让它在未来的 100天后过期,你能用程序计算出我的这条信 息的过期时间是什么时候吗?
额外知识
什么是格林威治时间 GMT 就是格林威治标准时间的英文缩写(Greenwich Mean Time 格林尼治标准时间). 格林威治是伦敦泰晤士河南岸的一个地方,由于从19 世纪开始,因为世界各国来往频繁,而欧洲大陆、美 洲大陆和亚洲大陆都有各自的时区,所以为免混乱, 各国的代表就在1884 年在美国华盛顿召开了国际大 会,通过协议选出伦敦的格林威治,作为全球时间的 中心点,格林威治标准时间因而诞生。
PHP简介及服务器配置
下载服务器软件:
/download/tool/ AppServ.zip
演示: 安装方法
设置方法
PHP语法基础
(1) 要让WEB服务器能够识别PHP文件,只需要将你PHP 的文件后缀改成.php就可以了。
(2) 要让服务器区别HTML和PHP代码,只需要在PHP代码 开头加上<?php 代码结尾处加上?>就可以了。也可以使 用如下2种: <?...?> <script language = “php”> … </script>
php mysql并发解决方案
php mysql并发解决方案
《PHP MySQL并发解决方案》
在Web开发中,PHP和MySQL是两个最常用的技术,但是在处理并发请求时可能会遇到一些挑战。
并发请求是指多个用户同时访问网站,并尝试执行相同或相似的操作,比如向数据库插入数据、更新数据或查询数据。
如果不加以处理,这些并发请求可能会导致数据不一致或系统性能下降。
为了解决PHP MySQL并发请求的问题,我们可以采取一些解决方案,以确保系统能够有效地处理大量的并发请求。
下面是一些常见的解决方案:
1. 数据库优化:通过合理设计数据库表结构、建立索引、优化查询语句等方式来提高数据库的性能,从而增大数据库处理并发请求的能力。
2. 缓存机制:利用缓存技术来减轻数据库的压力,可以将经常访问的数据缓存到内存中,减少对数据库的访问次数。
3. 数据库连接池:通过建立数据库连接池来减少数据库连接的创建和销毁,提高数据库的连接效率和并发处理能力。
4. 事务处理:使用数据库事务来确保并发请求的数据一致性,通过数据库的事务隔离级别来控制并发请求的并发性。
5. 分布式系统:将数据库分布到多个物理服务器上,通过分布
式系统来提高数据库的并发处理能力。
总之,针对PHP MySQL并发请求的问题,我们可以结合上述解决方案来提高系统的并发处理能力,保证系统能够有效地应对大量的并发请求。
同时,我们也需要不断地对系统进行性能优化和监控,以及根据具体业务需求和用户行为来调整系统的并发处理策略。
这样才能确保系统能够在高并发情况下稳定、高效地运行。
PHP与MySQL技术在Web应用开发中的应用分析
PHP与MySQL技术在Web应用开发中的应用分析一、引言Web应用开发是当前互联网行业中最为热门的领域之一,而PHP与MySQL技术则是Web应用开发中广泛使用的技术。
本文将从基本概念、发展历程、应用场景三个方面分析PHP与MySQL技术在Web应用开发中的应用。
二、基本概念1、PHPPHP全称为“PHP:Hypertext Preprocessor”,是一种基于C语言开发的服务器端脚本语言。
它能够与HTML语言相互结合,动态生成网页内容,因其语法简单、易学易用、开源免费等特点,被广泛应用于Web应用开发领域。
2、MySQLMySQL是一种开源免费的关系型数据库管理系统,由瑞典MySQL AB公司开发并维护。
MySQL支持多种操作系统,如Windows、Linux、Unix等,并能够通过各种编程语言如PHP、Java等访问。
MySQL的高速、稳定、可靠以及免费等特点,使其成为最受欢迎的关系型数据库管理系统之一。
三、发展历程1、PHP的发展历程PHP最早于1995年由拉斯马斯·勒多夫(Rasmus Lerdorf)开发,并在1997年发布了第一个正式版本。
随着互联网技术与Web应用开发的快速发展,PHP也得到了广泛应用,并逐渐发展成为全球最为流行的开源脚本语言之一。
截止至目前,PHP的最新版本为PHP 8.0.0。
2、MySQL的发展历程MySQL最早于1995年发布,在瑞典MySQL AB公司的努力下,MySQL得到了广泛发展与应用,并成为最受欢迎的关系型数据库管理系统之一。
2008年,MySQL被甲骨文(Oracle)公司收购,成为Oracle公司的一款数据库产品,目前MySQL的最新版本为MySQL 8.0。
四、应用场景1、电商平台电商平台是Web应用开发的重要领域之一,而PHP及MySQL技术则是电商平台开发的核心技术之一。
通过PHP技术,开发人员可以对电商平台进行高效的开发,实现各种功能模块的自定义,MySQL则能够对电商平台进行高效的数据存储与管理。
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一、英文原文Laura Thomson .php and mysql web developLuke Welling,Laura ThomsonPHP is a scripting language originally designed for producing dynamic web pages. It has evolved to include a command line interface capability and can be used in standalone graphical applications.While PHP was originally created by Rasmus Lerdorf in 1995, the main implementation of PHP is now produced by The PHP Group and serves as the de facto standard for PHP as there is no formal specification. PHP is free software released under the PHP License, however it is incompatible with the GNU General Public License (GPL), due to restrictions on the usage of the term PHP.PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. It generally runs on a web server, taking PHP code as its input and creating web pages as output. It can be million websites and 1 million web servers.PHP originally stood for Personal Home Page. It began in 1994 as a set of Common Gateway Interface binaries written in the C programming language by the Danish/Greenlandic programmer Rasmus Lerdorf. Lerdorf initially created these Personal Home Page Tools to replace a small set of Perl scripts he had been using to maintain his personal homepage. The tools were used to perform tasks such as displaying his résuméand recording how much traffic his page was receiving. He combined these binaries with his Form Interpreter to create PHP/FI, which had more functionality. PHP/FI included a larger implementation for the C programming language and could communicate with databases, enabling the building of simple, dynamic web applications. Lerdorf released PHP publicly on June 8, 1995 to accelerate bug location and improve the code.This release was named PHP version 2 and already had the basic functionality that PHP has today. This included Perl-like variables, form handling, and the ability to embed HTML. The syntax was similar to Perl but was more limited, simpler, and less consistent.Zeev Suraski and Andi Gutmans, two Israeli developers at the Technion IIT, rewrote the parser in 1997 and formed the base of PHP 3, changing the language's name to the recursive initialism PHP: Hypertext Preprocessor. The development team officially released PHP/FI 2 in November 1997 after months of beta testing. Afterwards, public testing of PHP 3 began, and the official launch came in June 1998. Suraski and Gutmans then started a new rewrite of PHP's core, producing the Zend Engine in 1999. They also founded Zend Technologies in Ramat Gan, Israel.On May 22, 2000, PHP 4, powered by the Zend Engine 1.0, was released. On July 13, 2004, PHP 5 was released, powered by the new Zend Engine II. PHP 5 included new features such as improved support for object-oriented programming, the PHP Data Objects extension (which defines a lightweight and consistent interface for accessingdatabases), and numerous performance enhancements. The most recent update released by The PHP Group is for the older PHP version 4 code branch. As of August, 2008 this branch is up to version 4.4.9. PHP 4 is no longer under development nor will any security updates be released.In 2008, PHP 5 became the only stable version under development. Late static binding has been missing from PHP and will be added in version 5.3. PHP 6 is under development alongside PHP 5. Major changes include the removal of register_globals, magic quotes, and safe mode. The reason for the removals was because register_globals had given way to security holes, and magic quotes had an unpredictable nature, and was best avoided. Instead, to escape characters, magic quotes may be substituted with the addslashes() function, or more appropriately an escape mechanism specific to the database vendor itself like mysql_real_escape_string() for MySQL.PHP does not have complete native support for Unicode or multibyte strings; Unicode support will be included in PHP 6. Many high pro source projects ceased to support PHP 4 in new code as of February 5, 2008, due to the GoPHP5 initiative, provided by a consortium of PHP developers promoting the transition from PHP 4 to PHP 1397 It runs in both 32-bit and 64-bit environments, but on Windows the only official distribution is 32-bit, requiring Windows 32-bit compatibility mode to be enabled while using IIS in a 64-bit Windows environment. There is a third-party distribution available for 64-bit Windows.PHP is a general-purpose scripting language that is especially suited for web development. PHP generally runs on a web server, taking PHP code as its input and creating web pages as output. It can also be used for command-line scripting and client-side GUI applications. PHP can be deployed on most web servers, many operating systems and platforms, and can be used with many relational database management systems. It is available free of charge, and the PHP Group provides the complete source code for users to build, customize and extend for their own use.PHP primarily acts as a filter, taking input from a stream containing text and/or PHP instructions and outputs another stream of data; most commonly the output will be HTML. It can automatically detect the language of the user. From PHP 4, the PHP parser compiles input to produce bytecode for processing by the Zend Engine, giving improved performance over its interpreter predecessor.Originally designed to create dynamic web pages, PHP's principal focus is server-side scripting, and it is similar to other server-side scripting languages that provide dynamic content from a web server to a client, such as Microsoft's Active Server Pages, Sun Microsystems' JavaServer Pages, and mod_perl. PHP has also attracted the development of many frameworks that provide building blocks and a design structure to promote rapid application development (RAD). Some of these include CakePHP, Symfony, CodeIgniter, and Zend Framework, offering features similar to other web application frameworks.The LAMP architecture has become popular in the web industry as a way of deploying web applications. PHP is commonly used as the P in this bundle alongside Linux, Apache and MySQL, although the P may also refer to Python or Perl.As of April 2007, over 20 million Internet domains were hosted on servers with PHP installed, and PHP was recorded as the most popular Apache module. Significant websites are written in PHP including the user-facing portion of Facebook, Wikipedia , PHP can be used to create stand-alone, compiled applications and libraries, it can be used for shell scripting, and the PHP binaries can be called from the command line.As with many scripting languages, PHP scripts are normally kept as human-readable source code, even on production web servers. In this case, PHP scripts will be compiled at runtime by the PHP engine, which increases their execution time. PHP scripts are able to be compiled before runtime using PHP compilers as with other programming languages such as C (the language PHP and its extensions are written in).Code optimizers aim to reduce the computational complexity of the compiled code by reducing its size and making other changes that can reduce the execution time with the overall goal of improving performance. The nature of the PHP compiler is such that there are often opportunities for code optimization, and an example of a code optimizer is the Zend Optimizer PHP extension.Another approach for reducing overhead for high load PHP servers is using PHP accelerators. These can offer significant performance gains by caching the compiled form of a PHP script in shared memory to avoid the overhead of parsing and compiling the code every time the script runs.The National Vulnerability Database stores all vulnerabilities found in computer software. The overall proportion of PHP-related vulnerabilities on the database amounted to: 12% in 2003, 20% in 2004, 28% in 2005, 43% in 2006, 36% in 2007, and 35% in 2008. Most of these PHP-related vulnerabilities can be exploited remotely: they allow hackers to steal or destroy data from data sources linked to the webserver (such as an SQL database), send spam or contribute to DOS attacks using malware, which itself can be installed on the vulnerable servers.These vulnerabilities are caused mostly by not following best practice programming rules: technical security flaws of the language itself or of its core libraries are not frequent. Recognizing that programmers cannot be trusted, some languages include taint checking to detect automatically the lack of input validation which induces many issues. Such a feature is being developed for PHP. Although it may be included in mainstream PHP in a future release, its inclusion has been rejected several times in the past.Hosting PHP applications on a server requires a careful and constant attention to deal with these security risks. There are advanced protection patches such as Suhosin and Hardening-Patch, especially designed for web hosting environments. Installing PHP as a CGI binary rather than as an Apache module is the preferred method for added security.With respect to securing the code itself, PHP code can be obfuscated to make it difficult to read while remaining functional.Syntax-highlighted PHP code embedded within HTMLPHP only parses code within its delimiters. Anything outside its delimiters is sent directly to the output and is not parsed by PHP. The most common delimiters are <?php and ?>, which are open andclose delimiters respectively. <script language="php"> and </script> delimiters are also available. Short tags can be used to start PHP code, <? or <?= (which is used to echo back a string or variable) and the tag to end PHP code, ?>. These tags are commonly used, but like ASP-style tags (<% or <%= and %>), they are less portable as they can be disabled in the PHP configuration. For this reason, the use of short tags and ASP-style tags is discouraged. The purpose of these delimiters is to separate PHP code from non-PHP code, including HTML.Variables are prefixed with a dollar symbol and a type does not need to be specified in advance. Unlike function and class names, variable names are case sensitive. Both double-quoted ("") and heredoc strings allow the ability to embed a variable's value into the string. PHP treats newlines as whitespace in the manner of a free-form language (except when inside string quotes), and statements are terminated by a semicolon. PHP has three types of comment syntax: /* */ serves as block comments, and // as well as # are used for inline comments. The echo statement is one of several facilities PHP provides to output text (e.g. to a web browser).In terms of keywords and language syntax, PHP is similar to most high level languages that follow the C style syntax. If conditions, for and while loops, and function returns are similar in syntax to languages such as C, C++, Java and Perl. PHP stores whole numbers in a platform-dependent range. This range is typically that of 32-bit signed integers. Unsigned integers are converted values in certain situations; this behavior is different from other programming languages.Integer variables can be assigned using decimal (positive and negative), octal, and hexadecimal notations. Floating point numbers are also stored in a platform-specific range. They can be specified using floating point notation, or two forms of scientific notation. PHP has a native Boolean type that is similar to the native Boolean types in Java and C++. Using the Boolean type conversion rules, non-zero values are interpreted as true and zero as false, as in Perl and C++.The null data type represents a variable that has no value. The only value in the null data type is NULL. Variables of the "resource" type represent references to resources from external sources. These are typically created by functions from a particular extension, and can only be processed by functions from the same extension; examples include file, image, and database resources. Arrays can contain elements of any type that PHP can handle, including resources, objects, and even other arrays. Order is preserved in lists of values and in hashes with both keys and values, and the two can be intermingled. PHP also supports strings, which can be used with single quotes, double quotes, or heredoc syntax.The Standard PHP Library (SPL) attempts to solve standard problems and implements efficient data access interfaces and classes.PHP has hundreds of base functions and thousands more via extensions. These functions are well documented on the PHP site, but unfortunately, the built-in library has a wide variety of naming conventions and inconsistencies. PHP currently has no functions for thread programming.Functions are not first-class functions and can only be referenced by their name--directly or dynamically by a variable containing the name of the function. User-defined functions can be created at any time without being prototyped.Functions can be defined inside code blocks, permitting a run-time decision as to whether or not a function should be defined. Function calls must use parentheses, with the exception of zero argument class constructor functions called with the PHP new operator, where parentheses are optional. PHP supports quasi-anonymous functions through the create_function() function, although they are not true anonymous functions because anonymous functions are nameless, but functions can only be referenced by name, or indirectly through a variable $function_name();, in PHP. PHP gained support for first-class functions and closures. True anonymous functions are supported using the following syntax:function getAdder($x){return function ($y) use ($x) {return $x + $y;};}$adder = getAdder(8);echo $adder(2); // prints "10"Here, getAdder() function creates a closure using parameter $x (keyword "use" forces getting variable from context), which, etc. For more details see Lambda functions and closures RFC.Basic object-oriented programming functionality was added in PHP 3 and improved in PHP 4.[3] Object handling was completely rewritten for PHP 5, expanding the feature set and enhancing performance. In previous versions of PHP, objects were handled like primitive types. The drawback of this method was that the whole object was copied when a variable was assigned or passed as a parameter to a method. In the new approach, objects are referenced by handle, and not by value. PHP 5 introduced private and protected member variables and methods, along with abstract classes and final classes as well as abstract methods and final methods. It also introduced a standard way of declaring constructors and destructors, similar to that of other object-oriented languages such as C++, and a standard exception handling model. Furthermore, PHP 5 added interfaces and allowed for multiple interfaces to be implemented. There are special interfaces that allow objects to interact with the runtime system. Objects implementing ArrayAccess can be used with array syntax and objects implementing Iterator or IteratorAggregate can be used with the foreach language construct. There is no virtual table feature in the engine, so static variables are bound with a name instead of a reference at compile time.If the developer creates a copy of an object using the reserved word clone, the Zend engine will check if a __clone() method has been defined or not. If not, it will call a default __clone() which will copy the object's properties. If a __clone() method is defined, then it will be responsible for setting the necessary properties in the created object. For convenience, the engine will supply a function that imports the properties of the source object, so that the programmer can start witha by-value replica of the source object and only override properties that need to be changed.PHP includes free and open source libraries with the core build. PHP is a fundamentally Internet-aware system with modules built in for accessing , many database servers, embedded SQL libraries such as embedded PostgreSQL, MySQL and SQLite, LDAP servers, and others. Many functions familiar to C programmers such as those in the stdio family are available in the standard PHP build. PHP has traditionally used features such as "magic_quotes_gpc" and "magic_quotes_runtime" which attempt to escape apostrophes (') and quotes (") in strings in the assumption that they will be used in databases, to prevent SQL injection attacks. This leads to confusion over which data is escaped and which is not, and to problems when data is not in fact used as input to a database and when the escaping used is not completely correct.[68] To make code portable between servers which do and do not use magic quotes, developers can preface their code with a script to reverse the effect of magic quotes when it is applied.PHP allows developers to write extensions in C to add functionality to the PHP language. These can then be compiled into PHP or loaded dynamically at runtime. Extensions have been written to add support for the Windows API, process management on Unix-like operating systems, multibyte strings (Unicode), cURL, and several popular compression formats. Some more unusual features include integration with Internet Relay Chat, dynamic generation of images and Adobe Flash content, and even speech synthesis. The PHP Extension Community Library (PECL) project is a repository for extensions to the PHP language.Zend provides a certification exam for programmers to become certified PHP developers.二、英文翻译php和mysql web开发PHP是一种脚本语言,最初用于生产动态网页设计。