constant

constant

(PHP 4 >= 4.0.4, PHP 5)

constant -- Returns the value of a constant

Description

mixed constant ( string name )

constant() will return the value of the constant indicated by name.

constant() is useful if you need to retrieve the value of a constant, but do not know its name. I.e. it is stored in a variable or returned by a function.

This function works also with class constants.

Example 1. constant() example

<?php

define
("MAXSIZE", 100);

echo
MAXSIZE;
echo
constant("MAXSIZE"); // same thing as the previous line

?>

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

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