How to create constants in PHP

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In this short video you're going to learn how to create a constant in PHP. In PHP, a constant is a named value that remains the same throughout the execution of the script. Once a constant is defined, its value cannot be changed during the script's execution.

Constants are useful for defining values that are used frequently throughout your code, and that you don't want to change accidentally. They can also make your code easier to read and maintain.