get_defined_constants
PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8
get_defined_constants - Returns an associative array with the names of all the constants and their values
Code Examples
Example #1 get_defined_constants Example
Result: Array
(
[E_ERROR] => 1
[E_WARNING] => 2
[E_PARSE] => 4
[E_NOTICE] => 8
[E_CORE_ERROR] => 16
[E_CORE_WARNING] => 32
[E_COMPILE_ERROR] => 64
[E_COMPILE_WARNING] => 128
[E_USER_ERROR] => 256
[E_USER_WARNING] => 512
[E_USER_NOTICE] => 1024
[E_ALL] => 2047
[TRUE] => 1
)