array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'uk', ), 'this' => array ( 0 => 'function.get-defined-constants.php', 1 => 'get_defined_constants', 2 => 'Returns an associative array with the names of all the constants and their values', ), 'up' => array ( 0 => 'ref.info.php', 1 => 'Функції налаштування та отримання інформації про PHP', ), 'prev' => array ( 0 => 'function.get-current-user.php', 1 => 'get_current_user', ), 'next' => array ( 0 => 'function.get-extension-funcs.php', 1 => 'get_extension_funcs', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/info/functions/get-defined-constants.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

get_defined_constants

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

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

Опис

get_defined_constants(bool $categorize = false): array

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.

Параметри

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

Поданий вище приклад виведе щось схоже на:

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
        )

)

Значення, що повертаються

Returns an array of constant name => constant value array, optionally groupped by extension name registering the constant.

Приклади

Приклад #1 get_defined_constants() Example

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

Поданий вище приклад виведе щось схоже на:

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
)

Прогляньте також