What are the differences between php constants and static variables

This article mainly shows you the "what is the difference between php constants and static variables", the content is simple and clear, and I hope it can help you solve your doubts. Let me lead you to study and learn the difference between php constants and static variables.

The differences between constants and static variables in php: 1. Constants are immutable, while static variables can be assigned and changed through self; 2. In terms of compilation efficiency, the compilation process of constants is faster, while that of static variables is slower.

Operating environment of this tutorial: windows10 system, PHP7.1 version, DELL G3 computer

The difference between php constant and static variable

In terms of efficiency: the constant compilation process is much faster than static variables.

Code:

Conclusion:

The properties of the instance can only be accessed in the way $obj- > c.

Static variables and constants are properties of a class, which are accessed with a double colon (::), either through an object or a class name.

Constants are immutable, and static variables can be assigned and changed by self.

Const constant: immutable property of a class

Static variable: mutable attribute of a class

These are all the contents of the article "what's the difference between php constants and static variables". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!