Common coding errors and how to solve them

Today, I will talk to you about common coding errors and solutions, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following contents for you. I hope you can get something according to this article.

However, many of the mistakes made by developers can be avoided. If you can avoid these common mistakes mentioned in this article, you can write better and more concise code. This is not only good for yourself, but also good for other developers who need to view the code. So avoiding common mistakes is not just for yourself-it's also a big favor for the team.

To sum up, this time we have sorted out a series of common mistakes that should be avoided:

1. Non-descriptive naming of variables

Good variable names are very important and cannot be overemphasized. In many cases, you are not the only project developer, other developers also need to know the code you write.

Choosing a good name takes time, but it can save more time.

two。 Magic numbers and strings

Then, for the non-descriptive naming of the variable above, skip to the next item, which is about not assigning a value to the variable, also known as a magic number or magic string.

Wikipedia definition: magic number is the only value, has inexplicable meaning and occurs many times, and can and should be replaced by named constants.

Take a look at the following code snippet:

For ($I = 1; $I