define

(PHP 3, PHP 4, PHP 5)

define -- Defines a named constant

Beskrivelse

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

Defines a named constant at runtime.

Parameterliste

name

The name of the constant.

value

The value of the constant.

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.

Returneringsværdier

Returnerer TRUE ved succes, FALSE ved fejl.

Eksempler

Eksempel 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."

?>

Se også

defined()
constant()
The section on Constants