PHP. Учебник. 2005

define

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define

(PHP 3, PHP 4, PHP 5)define -- Defines a named constant

Description

bool define ( string name, mixed value [, bool case_insensitive] )


- Defines a named constant. See the section on constants for more details.

- The name of the constant is given by name; the value is given by value.

- The optional third parameter case_insensitive is also available. If the value TRUE is given, then the constant will be defined case-insensitive. The default behaviour is case-sensitive; i.e. CONSTANT and Constant represent different values.

-

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."

?>

- Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.

- See also defined(), constant() and the section on Constants.

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