Forum und email
get_defined_constants
Manuál PHP
PředcházejícíDalší

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

Popis

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.

Seznam parametrů

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));
?>

Výše uvedený příklad vypíše něco jako:

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
        )

)

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

Návratové hodnoty

ChangeLog (záznam změn)

VerzePopis
5.0.0 The categorize parameter was added.

Příklady

Příklad 1. get_defined_constants() Example

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

Výše uvedený příklad vypíše něco jako:

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
)

Viz také

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

PředcházejícíDomůDalší
get_current_userNahoru