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get_defined_constants


(PHP 4 >= 4.1.0, PHP 5)

get_defined_constantsReturns an associative array with the names of all the constants and their values

Beschreibung

array get_defined_constants ([ bool $categorize ] )

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.

Parameter-Liste

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.

PHP Code
1
2
define("MY_CONSTANT", 1); print_r(get_defined_constants(true));

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Array
(
    [Core] => 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
        )
)

Rückgabewerte

Changelog

Version Beschreibung
5.3.1 Windows only : Core constants are categorized under Core, previously mhash.
5.3.0 Core constants are categorized under Core, previously internal. On Windows, the Core Constants are categorized under mhash.
5.0.0 The categorize parameter was added.

Beispiele

PHP Code
1
print_r(get_defined_constants());

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

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
)

Siehe auch