Syntax
1.
<?
2.
define(
"CONSTANT"
,
"value"
);
3.
4.
echo
CONSTANT;
5.
?>
Sample
01.
<?php
02.
define(
"CONSTANT"
,
"Hello world."
);
03.
echo
CONSTANT.
"<br>"
;
// outputs "Hello world."
04.
echo
Constant.
"<br>"
;
// outputs "Constant" and issues a notice.
05.
06.
define(
"GREETING"
,
"Hello you."
, true);
07.
echo
GREETING.
"<br>"
;
// outputs "Hello you."
08.
echo
Greeting.
"<br>"
;
// outputs "Hello you."
09.
?>

Screenshot

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