Working with Static Variable

                                
<?php
function myFunction() { 
static $x = 0; 
echo $x; 
$x++; 
}
myFunction(); 
myFunction(); 
myFunction(); 
?>

Working with Constants

Syntax of Define Function
define(name, value, case-insensitive)

Without case-insensitive

<?php
define("GREETING", "Welcome to NUV");
echo GREETING;
?>

With case-insensitive

<?php
define("GREETING", "Welcome to NUV", true);
echo greeting;
?>

Working with Array of Constants

                                
<?php
define("cars", [ 
"Maruti", 
"Hyundai", 
"Toyota" 
]);
echo cars[0];
?>

Creating Global Constants

                                
<?php
define("GREETING", "Welcome to NUV");
function myFunction() { 
echo GREETING; 
}
myFunction();
?>