What types of php interfaces are there?

What is the interface?

Using interface (interface), you can specify which methods a certain class must implement, but you do not need to define the specific content of these methods.

The interface is defined through the interface keyword, just like defining a standard class, but all methods defined in it are empty.

All methods defined in the interface must be public. This is a characteristic of the interface.

What are the types of php interfaces?

Interfaces can be divided into two types according to the requester:

1. It is an interface called by other internal projects (including js asynchronous request interfaces and timing programs).

2. It is an external interface, mainly provided for calls by external developers.

The biggest difference between the two interfaces is that the internal interface does not require strict authentication, while the external interface requires strict authentication. There are various encryption and decryption methods, the most common and simple of which is http basic authentication. , for example, the account and password pop-up window that pops up in our backend uses basic verification. You must enter your account and password to pass the verification. However, if the internal interface involves important operations and you do not want to be maliciously requested by others, you still need to do some encryption verification.

No matter which interface it is, the following issues should be considered:

1. Security. Parameter safety: For this we have $_INPUT which is basically enough. Whether authentication is required: If it is just an interface of the internal notification class/callback class, even if it is maliciously requested, the normal data will not be affected. In this case, there is no need to do verification at all. For example, I will make an interface to synchronize order status. The process inside is to query the orders with problematic order status, and then update the status of these orders. This kind of interface does not need to return any value, and even if it is maliciously called by a bad person, it will not be affected, so there is no need to perform authentication at all. Therefore, whether to add verification or not is determined according to the actual logic of the interface.

2. Can you repeat the request? For example, if an interface inserts a piece of data based on the incoming order number, it needs to make judgments about repeated requests to avoid inserting multiple pieces of data.

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