get_defined_constants Returns an associative array with the names of all the constants and their values &reftitle.description; arrayget_defined_constants boolcategorize Returns the names and values of all the constants currently defined. This includes those created by extensions as well as those created with the define function. &reftitle.parameters; categorize 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. ]]> &example.outputs.similar; 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 ) ) ]]> &reftitle.returnvalues; &reftitle.changelog; &Version; &Description; 5.0.0 The categorize parameter was added. &reftitle.examples; <function>get_defined_constants</function> Example ]]> &example.outputs.similar; 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 ) ]]> &reftitle.seealso; defined get_loaded_extensions get_defined_functions get_defined_vars