


ThinkPHP development series one framework construction_PHP tutorial
In the early stage, we only need to download one, which is the core package. We won’t be using the expansion pack for the time being and will download it later. Place the downloaded and unzipped ThinkPHP folder in the root directory of the project we built. We know that our projects require a front and back. So we first create new Home and Admin folders.
When we actually deploy the website, the directory structure often becomes complicated due to the complexity of the project. Our recommended deployment directory structure is as follows:
Directory/File Description
ThinkPHP system directory (the directory structure below is the same as the system directory above)
Public website public resource directory (stores the website’s Css, Js, pictures and other resources)
Uploads website upload directory (unified directory uploaded by users)
Home project directory (the directory structure below is the same as the application directory above)
Admin background management project directory
……More project directories
index.php Entry file of project Home
admin.php Entry file for project Admin
…… More project entry files
If grouping modules are used, it can be simplified to a project directory
Directory/File Description
ThinkPHP system directory (the directory structure below is the same as the system directory above)
App project directory (the grouped directory structure will be described later)
Public website public resource directory (stores the website’s Css, Js, pictures and other resources)
Uploads website upload directory (unified directory for user uploads)
index.php The entry file of the website
The template files of the project are still placed under the Tpl directory of the project, but the externally called resource files, including images, JS and CSS, are placed under the public directory Public of the website and stored in the Images, Js and Css subdirectories. If If possible, these resource files can even be placed on an external server for remote calls and optimized.
Here we choose the second directory method. ThinkPHP requires an entry file, which is index.php under the project root directory. The content is: //Define project name
//Define project name
define('APP_NAME', 'app');
//Define project path
define('APP_PATH', './app/');
/* Data directory*/
define('Egojit_DATA_PATH', './data/');
/* Configuration file directory*/
define('CONF_PATH', Egojit_DATA_PATH . 'config/');
//Load the frame into the file
require './ThinkPHP/ThinkPHP.php';
Why I chose this grouping directory is mainly because I personally think this grouping directory is simpler and clearer. In this way, when we request this website, you will find that many directories will be automatically generated under the app directory. If successful you will see the screen as shown in the picture


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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