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This article mainly introduces the example analysis of object-oriented programming in PHP, which has a certain reference value, and interested friends can refer to it. I hope you will gain a lot after reading this article.

Unlike most object-oriented programming languages, PHP supports both process-oriented and object-oriented programming. PHP developers are free to choose between process-oriented and object-oriented programming. However, in previous versions of PHP5, PHP was mainly a process-oriented programming language, so most of the time PHP developers should still choose process-oriented development. In fact, Kayo believes that even if a PHP developer does not use object-oriented at all, he can still develop excellent PHP programs. We can imagine that the parsing of Web pages is very procedural, and embedding process-oriented code in HTML is a very natural means, so it can not be said that object-oriented is a better way of programming than process-oriented programming, but another programming choice, of course, this is the case in PHP.

For the respective advantages and disadvantages of process-oriented and object-oriented in PHP, I believe it will be very clear on the Internet. Process-oriented development cycle is short, release is fast, efficiency is high, object-oriented development cycle is long, efficiency is low, but it is easy to maintain, improve, expand and develop API. It is obvious that it is difficult to say which way is better. Instead of arguing about which way of programming is better, it is better to give full play to the respective advantages of the two ways of programming.

When we go back to PHP's object-oriented programming, we can easily feel its advantages in the process of using object-oriented programming. The most obvious thing is that the code function is clearer, data processing, user login, content presentation and so on are all written into a class. We only need to include these classes and instantiate objects in the page, and then use concise statements to apply objects, which is similar to data processing and user login in the process of oriented. Compared with the content and other parts written together, the programming ideas of the former must be clearer and easier to understand. I believe that team development should be more inclined to object-oriented programming.

Here is a simple example to illustrate the advantages and disadvantages of process-oriented and object-oriented approaches.

When dealing with forms or accepting url parameters, PHP developers often need to filter strings to prevent problems such as SQL injection.

In the process-oriented approach, we will call a variety of string-filtering library functions or custom functions in statements that need to filter strings, so that many different filtering functions and even complex regular expressions will appear on the page. even if enough comments are written on the page, it is hard to avoid confusion. Let's take a look at the object-oriented approach.

First of all, a simple class for dealing with strings is defined to write various complex string processing methods. (object-oriented knowledge about PHP can be Google, which is not described separately in this article. )

Then instantiate the class on the page where you need to filter the string

$string = new StringFiltration ()

Then the method defined in the class is called when filtering or judging the string, so some statements calling the method appear on the page.

$email = $string- > realEscapeString ($_ POST ['email']); $postId = $string- > eregNumber ($id)

In the above example, we can see that before object-oriented processing strings, we must define a class, and then instantiate the class and call the methods in the required page. Object-oriented is less efficient than process-oriented, and it is also very troublesome, but this advantage is also obvious. The statements that actually handle or judge strings are written inside the class. In the page that calls the method, there will not be a variety of complex custom functions and statements such as regular expressions, the structure of the page and even the structure of the entire site will become clearer, and after writing a class, you can use this class again for PHP development in the future, which is more efficient in the long run. So developers who have been doing PHP process-oriented programming might as well try object-oriented instead.

Thank you for reading this article carefully. I hope the article "sample Analysis of object-oriented programming in PHP" shared by the editor will be helpful to you. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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