


1. Introduction
Smarty is a template PHP template engine written in PHP. It is currently one of the most famous PHP template engines in the industry. It separates logical code and external content, providing an easy-to-manage and use method to logically separate PHP code that is originally mixed with HTML code. Simply put, the purpose is to separate PHP programmers from the front-end, so that PHP programmers can change the logical content of the program without affecting the front-end page design, and the front-end re-modifying the page will not affect the program logic of the program. It is particularly important in cooperative projects.
2. So what are the advantages of smarty?
a. Speed: Programs written using Smarty can achieve maximum speed improvements, which is compared to other template engine technologies.
b. Compiled type: A program written in Smarty must be compiled into a non-template technology PHP file at runtime. This file uses a mixture of PHP and HTML. The WEB request will be directly converted to this the next time the template is accessed. file without recompiling the template (when the source program has not been changed)
c. Caching technology: A caching technology selected by Smarty. It can cache the HTML file that the user finally sees into a static HTML page. When the cache attribute of Smarty is set to true, the During the cachetime period, the user's WEB request is directly converted into this static HTML file, which is equivalent to calling a static HTML file.
d. Plug-in technology: Smarty can customize plug-ins. Plug-ins are actually some custom functions.
e. If/elseif/else/endif can be used in templates. Using judgment statements in template files can very conveniently reformat the template.
3. However, please pay attention when using smarty in the following situations
a. Content that needs to be updated in real time. For example, like stock display, which needs to update data frequently, using smarty for this type of program will slow down template processing.
b. Small projects. For small projects where the artist and programmer are both involved because the project is simple, using Smarty will lose the advantage of PHP's rapid development to a certain extent.
(PS: However, for the sake of standardizing the entire project, please try to use the template engine. In fact, if you get used to it, the development speed will be faster. The above are the problems encountered by developers who are not used to using the template engine)

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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