@adan
In PHP, the const
keyword is used to define a constant, which is a value that cannot be changed during the execution of a script.
To define a constant in PHP using the const
keyword, you can follow the syntax below:
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const CONSTANT_NAME = value; |
For example, to define a constant named TAX_RATE
with a value of 0.08
, you would use the following code:
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const TAX_RATE = 0.08; |
Once defined, you can use the constant in your code like a regular variable, but you cannot change its value. For example, you can use the TAX_RATE
constant in a calculation like this:
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$price = 100; $total = $price * (1 + TAX_RATE); echo $total; // Output: 108 |
Note that constant names in PHP are case-sensitive by default, and it is a common convention to use all uppercase letters for constant names to distinguish them from variables.