Документация PHP
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define
(PHP 4, PHP 5)
define — Defines a named constant
Описание
bool define ( string $name , mixed $value [, bool $case_insensitive ] )
Defines a named constant at runtime.
Список параметров
- name
-
The name of the constant.
- value
-
The value of the constant; only scalar and null values are allowed. Scalar values are integer, float, string or boolean values.
- case_insensitive
-
If set to TRUE, the constant will be defined case-insensitive. The default behaviour is case-sensitive; i.e. CONSTANT and Constant represent different values.
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример #1 Defining Constants
<?php
define("CONSTANT", "Hello world.");
echo CONSTANT; // outputs "Hello world."
echo Constant; // outputs "Constant" and issues a notice.
define("GREETING", "Hello you.", true);
echo GREETING; // outputs "Hello you."
echo Greeting; // outputs "Hello you."
?>
Смотрите также
- defined()
- constant()
- The section on Constants