Php Constant

Posted on May 23, 2017June 4, 2018 by pradip parkar

Constant of any assigned value never be change in an execution of program.
If assign value in a constant then the value of it never change means it stored value permanent.
define( ) function is used for define a constant it has three parameter.
parameter is Name of Constant,Value of Constant and Case-sensitive case-sensitive is optional for remove case-sensitive of constant name.
For remove the case-sensitive of constant name we pass the true in third parameter.

define("Name of constant","Value of Constant");

Example

<?php

define("Message","Hello php!");

echo "constant Message=".$Message;

define("MSG","Hello world!");

echo "constant MSG".$MSG;

?>

Result

constant Message=Hello php!

constant MSG=Hello world!

Example after remove case-sensitive from constant

<?php

define("MSG","Hello world!",true);

echo "constant MSG".$msg;//we can call constant MSG as lower form msg using third optional parameter

?>

Result


constant MSG=Hello world!//after pass the true in third parameter remove the case-sensitive on constant name

pradip parkar

Hello, My Name is pradip parker . I am a Web Developer, Professional Blogger from India. i love and like web designing and developing, i have two year of experience in programming and developing I am the founder of programmingconcept. I started this blog in 2017 to for help developers by providing easy,small and best tutorials.

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