Get the defining class for a constant in PHP

Question

I am wanting to use reflection to obtain a list of the constants defined by a class in PHP.

Currently using reflection I can get a list of the constants, but this also i

Answer 1

By default, PHP has no function I'm aware of that would already remove the parent classes and interfaces constants. So you would need to do that your own:

$reflection = new ReflectionClass('Bar');
$buffer = $reflection->getConstants();
foreach (
    array($reflection->getParentClass())
    + $reflection->getInterfaces()
    as $fill
) {
    $buffer = array_diff_key($buffer, $fill->getConstants());
}

The result in $buffer is the array you are looking for:

Array
(
    [CHILD_CONST] => child
    [BAR_CONST] => bar_const
)