For general constants, Coding standards / Naming Conventions says that constants should always be all-uppercase, with underscores to separate words and that module-defined constant names should also be prefixed by the module module machine name, all-uppercase, and an underscore charater.

Object-oriented names don't follow the normal conventions of prefixing the name with the module or using underscores; instead, they opt for various forms of camel case.

Unfortunately, Object-oriented code doesn't mention class constants at all.

Which of the following is correct?

class Foo {
  const FOO_CONSTANT_VALUE = 'bar';
}

class Foo {
  const CONSTANT_VALUE = 'bar';
}

class Foo {
  const constantValue = 'bar';
}

For general constants, Coding standards / Naming Conventions says that constants should always be all-uppercase, with underscores to separate words and that module-defined constant names should also be prefixed by the module module machine name, all-uppercase, and an underscore character.

Object-oriented names don't follow the normal conventions of prefixing the name with the module or using underscores; instead, they opt for various forms of camel case.

Unfortunately, Object-oriented code doesn't mention class constants at all.

Which of the following is correct?

• const FOO_CONSTANT_VALUE = 'bar';
• const CONSTANT_VALUE = 'bar';
• const constantValue = 'bar';

I'm trying to figure out the proper naming convention for class constants.

For general constants, the coding standards states:

Constants should always be all-uppercase, with underscores to separate words. This includes pre-defined PHP constants like TRUE, FALSE, and NULL. Module-defined constant names should also be prefixed by an uppercase spelling of the module they are defined by.

However, object-oriented names don't follow the normal conventions of prefixing the name with the module or using underscores, instead opting for various forms of camel case. And unfortunately, the object-oriented coding standards doesn't mention class constants at all.

So which of the following is correct?

class Foo {
  const FOO_CONSTANT_VALUE = 'bar';
}

or

class Foo {
  const CONSTANT_VALUE = 'bar';
}

or

class Foo {
  const constantValue = 'bar';
}

For general constants, Coding standards / Naming Conventions says that constants should always be all-uppercase, with underscores to separate words and that module-defined constant names should also be prefixed by the module module machine name, all-uppercase, and an underscore charater.

Object-oriented names don't follow the normal conventions of prefixing the name with the module or using underscores; instead, they opt for various forms of camel case.

Unfortunately, Object-oriented code doesn't mention class constants at all.

Which of the following is correct?

class Foo {
  const FOO_CONSTANT_VALUE = 'bar';
}

class Foo {
  const CONSTANT_VALUE = 'bar';
}

class Foo {
  const constantValue = 'bar';
}