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define()

define - Defines a named constant

Syntax

bool define (string $name, mixed $value, bool $case_insensitive)

Arguments

  • 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. It is possible to define resource constants, however it is not recommended and may cause unpredictable behavior.
  • case_insensitive - If set to TRUE, the constant will be defined case-insensitive. The default behavior is case-sensitive; i.e. CONSTANTand Constantrepresent different values. Note: Case-insensitive constants are stored as lower-case.

Description

Defines a named constant at runtime.

Version

PHP 4, 5

Return value

Returns TRUE on success or FALSE on failure.