#php constant tutorial

A constant is a identifier or name for a simple value.The value of php constant do not change during the execution of script.

Constant are case sensitve.

It became easy to understand after reading this example shown below:

<?

define( “SITE”,  “fullyhelp.com”);

define(“AUTHOR”,  “libra”);echo SITE

echo AUTHOR

echo SITE. “by” . AUTHOR

?>

If the php constant tutorial is not case- sensitive , then this statement couldn’d work.see the example:

<?

echo Site;?>

If you want to make it case- insesitive, then only you may set a third parameter to true

<? define( “SITE”,  “fullyhelp.com”);

echo SITE