Is it possible to use the const keyword for defining class constants in PHP?

Yes, it is possible to use the const keyword for defining class constants in PHP. Class constants are declared using the const keyword within the class definition and can be accessed without needing an instance of the class. They are useful for defining values that should not change throughout the execution of the program. 

class MyClass {
    const MY_CONSTANT = 'Hello, World!';
    
    public function getConstant() {
        return self::MY_CONSTANT;
    }
}

$myClass = new MyClass();
echo $myClass->getConstant(); // Output: Hello, World!

Keywords

PHP const keyword class constants OOP programming

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