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get_defined_constants
Podręcznik PHP
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get_defined_constants

(PHP 4 >= 4.1.0, PHP 5)

get_defined_constants -- Returns an associative array with the names of all the constants and their values

Opis

array get_defined_constants ( [mixed 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.

Parametry

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));
?>

Powyższy przykład wyświetli coś podobnego do:

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
        )

)

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

Zwracane wartości

Rejestr zmian

WersjaOpis
5.0.0 The categorize parameter was added.

Przykłady

Przykład 1. get_defined_constants() Example

<?php
print_r(get_defined_constants());
?>

Powyższy przykład wyświetli coś podobnego do:

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
)

Patrz także

defined()
get_loaded_extensions()
get_defined_functions()
get_defined_vars()

PoprzedniSpis treściNastępny
get_current_userPoczątek rozdziału