(PHP 7 >= 7.1.0, PHP 8)
ReflectionClass::getReflectionConstants — Gets class constants
Retrieves reflected constants.
filterThe optional filter, for filtering desired constant visibilities. It's configured using the ReflectionClassConstant constants, and defaults to all constant visibilities.
An array of ReflectionClassConstant objects.
| Version | Description | 
|---|---|
| 8.0.0 | filterhas been added. | 
Example #1 Basic ReflectionClass::getReflectionConstants() example
<?php
class Foo {
    public    const FOO  = 1;
    protected const BAR  = 2;
    private   const BAZ  = 3;
}
$foo = new Foo();
$reflect = new ReflectionClass($foo);
$consts  = $reflect->getReflectionConstants();
foreach ($consts as $const) {
    print $const->getName() . "\n";
}
var_dump($consts);
?>The above example will output something similar to:
FOO
BAR
BAZ
array(3) {
  [0]=>
  object(ReflectionClassConstant)#3 (2) {
    ["name"]=>
    string(3) "FOO"
    ["class"]=>
    string(3) "Foo"
  }
  [1]=>
  object(ReflectionClassConstant)#4 (2) {
    ["name"]=>
    string(3) "BAR"
    ["class"]=>
    string(3) "Foo"
  }
  [2]=>
  object(ReflectionClassConstant)#5 (2) {
    ["name"]=>
    string(3) "BAZ"
    ["class"]=>
    string(3) "Foo"
  }
}
