PHP 基础知识部分
1. 求$a的值
复制代码 代码如下:
$a = "hello";
$b = &$a;
unset($b);
$b = "world";
echo $a;
2. 求$b的值
复制代码 代码如下:
$a = 1;
$x = &$a;
$b = $a++;
echo $b;
3. 写出一个函数实现 删除指定目录包括其下的所有子目录以及文件
4. 写一个函数,算出两个文件的相对路径,如:
$a = '/a/b/c/d/e.php';
$b = '/a/b/12/34/c.php';
javascript 基础知识部分
1. 谈谈js实现继承的几种方式,并写出demo
2. 谈谈你熟悉的js框架,并实现下面DOM元素的获取
要求找到drag="true" 并且 index="1" 或 无index属性的div
提示: 如果不能一次写出,请完成下来步骤
1. 找到drag="true" 并且 index="1"
2. 找到drag="true" 并且 无index属性的
3. 将二者联立起来得到
3. 实现一个遮罩层效果,要求要显示的元素在页面上居中显示
4. 闭包知识考察
复制代码 代码如下:
function step(a){
return function(x){
return x+a++;
}
}
var a = step(10);
var b = step(20);
alert(a(10));
alert(b(20));
var a="123abc";
alert(typeof(a++));
alert(a);
MySQL 知识部分
1. 某内容管理系统中,表message有如下字段
id 文章id
title 文章标题
content 文章内容
category_id 文章分类id
hits 点击量
创建上表,写出MySQL语句
2. 同样上述内容管理系统:表comment记录用户回复内容,字段如下
comment_id 回复id
id 文章id,关联message表中的id
comment_content 回复内容
现通过查询数据库需要得到以下格式的文章标题列表,并按照回复数量排序,回复最高的排在最前面
文章id 文章标题 点击量 回复数量
用一个SQL语句完成上述查询,如果文章没有回复则回复数量显示为0
3. 上述内容管理系统,表category保存分类信息,字段如下
category_id int(4) not null auto_increment;
categroy_name varchar(40) not null;
用户输入文章时,通过选择下拉菜单选定文章分类
写出如何实现这个下拉菜单[可使用PHP,JAVASCRIPT,HTML]
Mysql 知识扩展部分
4. 系统需要对分类表进行扩展,使它能支持无限级别分类,请设计这个表结构,并根据你的设计完成下述场景
1. 查找隶属指定分类下的所有文章(包含子分类下的所有文章)
2. 查找指定文章的分类到根分类的层级,比如:
文章"Mysql优化心得" 它对应在 "程序设计/Mysql/运维/" 下
3. 删除分类时要求也能删除其下所有子分类
5. 系统需要对文章增加标签功能,(标签与文章是多对多的关系),用于实现"相关文章"功能.请设计这个表结构,
并根据你的设计完成下述场景.
1. 查找 与指定文章最相近的五篇文章 (相似度的算法 以相同标签的数量作为依据,数量越大说明越相似)
综合知识部分:
1. 谈谈你对Cookie 与 Session 的理解,它们的适用场景是什么,如有可能可阐述下在多种应用下Session如何共享的思路
2. 谈谈你对单点登录的理解,比如原理与实现,以及实现过程中有哪些问题需要注意
3. 谈谈你对MVC的理解,MVC的缺点是什么,如果让你实现一个MVC框架,你想怎样实现?
4. 谈谈你平常工作中使用过的权限管理部分,你是如何理解与实现的?

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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