define

(PHP 3, PHP 4 )

define -- Defines a named constant.

Description

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

Defines a named constant, which is similar to a variable except:

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 1 is given, then the constant will be defined case-insensitive. The default behaviour is case-sensitive; i.e. CONSTANT and Constant represent different values.

Example 1. Defining Constants


<?php
define ("CONSTANT", "Hello world.");
echo CONSTANT; // outputs "Hello world."
?>
      

Define() returns TRUE on success and FALSE if an error occurs.

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


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