


Teach you step by step how to do a keyword matching project (search engine)----Day 15, teach you how to do it----_PHP Tutorial
Teach you step by step how to do keyword matching projects (search engines)----Day 15, teach you how to do----
Day 15
Xiao Shuaishuai is very happy to do simple things. He doesn't know how to do complicated things, but after listening to Boss Yu's explanation, he feels that many things are so simple.
He wrote some code casually, and then went to Boss Yu to ask for advice on what to do next...
<?<span>php </span><span>class</span> OldAgeCharListHandle <span>extends</span><span> CharListHandle{ </span><span>public</span> <span>function</span> <span>exec</span><span>(){ </span><span>$this</span>->charlist->addCore("老年"<span>); </span><span>$this</span>->charlist->addBlacklist("青年"<span>); </span><span>$this</span>->charlist->addBlacklist("少年"<span>); </span><span>$this</span>->charlist->addBlacklist("中年"<span>); </span><span>$this</span>->charlist->addBlacklist("童年"<span>); } }</span>
Xiao Shuaishuai said to the boss: Boss Yu, the middle-aged and elderly people are done. I am wondering if there will be some processing with different colors or brands. When will this code be complete?
Boss Yu said: Well, now that you have mentioned this point, do you have any good plans to solve these problems?
Xiao Shuaishuai said: I don’t know if my plan is mature yet. I need everyone’s support and discussion.
Boss Yu said: Okay, good, Xiao Shuai Shuai finally knows how to use the power of the team. I will convene a discussion meeting with everyone in the afternoon to prepare your problems and your preliminary solutions.
When you have doubts about your decision-making, the strength of the team is your solid backing
During the discussion meeting in the afternoon, Xiao Shuai Shuai pointed out the problems one by one.
Xiao Lele said: To solve these problems, I think we should make an antonym comparison. This information can be saved in the database.
Xiao Huanhuan said: We can try to do it by category. Some attributes of each category are fixed. As long as we find the correspondence between these fixed attributes, it will be done well.
Little Heng Heng said: You can use it as well. I think it can also be used as an alias or a synonym.
......
After some discussion, Xiao Shuai Shuai approached Boss Yu and asked: Boss Yu, which of the solutions they discussed should I adopt?
Boss Yu listed the questions: What do you think of the antonyms, correspondences, synonyms or aliases they mentioned?
Xiao Shuai Shuai replied: Dictionary.
Boss Yu nodded in agreement and continued: Have we already implemented the concept of dictionary in the program?
Xiao Shuaishuai took a look at the code and said excitedly: It is indeed useful, just that CharList.
Boss Yu continued: Since we have used it in our consciousness, now we construct this charlist through our own code. If we already have data such as correspondences, antonyms and synonyms, what can we do? Do it.
Xiao Shuai Shuai replied: Got it, our code is just matching and corresponding based on the existing data.
Boss Yu said: Now that you understand, just do it and look forward to your good results.
Little Shuaishuai finally realized that the boss is indeed extraordinary and a god-like existence.

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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