get_defined_constants

Parameters

categorize

May be passed, causing this function to return a multi-dimensional array with categories in the keys of the first dimension and constants and their values in the second dimension.

<?php
define("MY_CONSTANT", 1);
print_r(get_defined_constants(true));
?>

The above example will output something similar to:

 
 Array (     [internal] => 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         )      [pcre] => Array         (             [PREG_PATTERN_ORDER] => 1             [PREG_SET_ORDER] => 2             [PREG_OFFSET_CAPTURE] => 256             [PREG_SPLIT_NO_EMPTY] => 1             [PREG_SPLIT_DELIM_CAPTURE] => 2             [PREG_SPLIT_OFFSET_CAPTURE] => 4             [PREG_GREP_INVERT] => 1         )      [user] => Array         (             [MY_CONSTANT] => 1         )  ) 
         

Note: The value of the categorize parameter is irrelevant, only its presence is considered.