PHP是什么?能干什么?PHP培训学些什么内容?
PHP是什么?能干什么?PHP培训学些什么内容?
PHP课程已经在广州拉开了序幕,一些报名的同学还不怎么清楚我们PHP课程大概是些什么内容和步骤,下面我们就来详细说一下。
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PHP最主要的作用就是用于WEB网站开发,而WEB开发的基石是HTTP协议,一些培训机构根本不讲HTTP协议有的培训机构会讲一点的HTTP的基础,但对HTTP底层的原理却只是一点皮毛,这很容易造成同学们知其然而不知其所以然。学员不知道如何利用Http请求的消息头Referer实现防盗链,如何使用Http响应的状态码来控制浏览器的行为. 如何使用Socke来发送Http请求并配合正则表达式去采集指定数据
对于Linux这门核心课程,广州传智播客给予了充分的重视,光讲解的linux核心指令就多达80多个, 还讲解很多系统级别和Linux内核的技术,比如:如何查看Linux内核的源码如何搭建Lamp环境并调优,Linux分区,Linux 下Shell使用、tcp/ip基础、linux网络环境配置三种方式、如何配置防火墙、rpm包管理、samba服务器、Linux任务调度命令、网络监控(netstat/top)、如何追踪路由包、Linux系统环境配置等, 一些机构对samba, Linux系统环境配置, 网络监控(netstat/top)、Linux分区、Linux任务调度命令只字未提。
PHP和Mysql是黄金组合。Mysql掌握到什么程度是衡量PHP程序员的重要指标,有些培训机构的Mysql课程只有两天时间,这还不算让学生自学的一天时间,传智播客对Mysql数据库高度重视,总共是四天时间,而且是全天授课,全程陪同,内容全面深入,连Mysql的触发器和存储过程都讲解深入到位。正所谓不怕不识货就怕货比货。和其它机构的Mysql视频教程比较后,你就会发现他们少了很多内容。
PHP的MVC框架目前最为流行的是(TP、zend framework, yii) ,几乎所有的培训机构只会讲解TP这个框架,并且只是简单的教你如何使用。传智播客广州PHP培训课程中的MVC框架讲解全面,我们安排每位老师深入研究一种框架,在带课时讲解自己最擅长的MVC框架,并从源码级别去分析框架,渗透了大量的编程思想。这样,同学们就有机会去深入学习三种MVC框架,学到的绝不是三脚猫的功夫。

In PHP, trait is suitable for situations where method reuse is required but not suitable for inheritance. 1) Trait allows multiplexing methods in classes to avoid multiple inheritance complexity. 2) When using trait, you need to pay attention to method conflicts, which can be resolved through the alternative and as keywords. 3) Overuse of trait should be avoided and its single responsibility should be maintained to optimize performance and improve code maintainability.

Dependency Injection Container (DIC) is a tool that manages and provides object dependencies for use in PHP projects. The main benefits of DIC include: 1. Decoupling, making components independent, and the code is easy to maintain and test; 2. Flexibility, easy to replace or modify dependencies; 3. Testability, convenient for injecting mock objects for unit testing.

SplFixedArray is a fixed-size array in PHP, suitable for scenarios where high performance and low memory usage are required. 1) It needs to specify the size when creating to avoid the overhead caused by dynamic adjustment. 2) Based on C language array, directly operates memory and fast access speed. 3) Suitable for large-scale data processing and memory-sensitive environments, but it needs to be used with caution because its size is fixed.

PHP handles file uploads through the $\_FILES variable. The methods to ensure security include: 1. Check upload errors, 2. Verify file type and size, 3. Prevent file overwriting, 4. Move files to a permanent storage location.

In JavaScript, you can use NullCoalescingOperator(??) and NullCoalescingAssignmentOperator(??=). 1.??Returns the first non-null or non-undefined operand. 2.??= Assign the variable to the value of the right operand, but only if the variable is null or undefined. These operators simplify code logic, improve readability and performance.

CSP is important because it can prevent XSS attacks and limit resource loading, improving website security. 1.CSP is part of HTTP response headers, limiting malicious behavior through strict policies. 2. The basic usage is to only allow loading resources from the same origin. 3. Advanced usage can set more fine-grained strategies, such as allowing specific domain names to load scripts and styles. 4. Use Content-Security-Policy-Report-Only header to debug and optimize CSP policies.

HTTP request methods include GET, POST, PUT and DELETE, which are used to obtain, submit, update and delete resources respectively. 1. The GET method is used to obtain resources and is suitable for read operations. 2. The POST method is used to submit data and is often used to create new resources. 3. The PUT method is used to update resources and is suitable for complete updates. 4. The DELETE method is used to delete resources and is suitable for deletion operations.

HTTPS is a protocol that adds a security layer on the basis of HTTP, which mainly protects user privacy and data security through encrypted data. Its working principles include TLS handshake, certificate verification and encrypted communication. When implementing HTTPS, you need to pay attention to certificate management, performance impact and mixed content issues.


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