const function php code example

Example 1: construtor php

class BaseClass {
    function __construct() {
        print "In BaseClass constructor\n";
    }
}

class SubClass extends BaseClass {
    function __construct() {
        parent::__construct();
        print "In SubClass constructor\n";
    }
}

Example 2: php const scope

<?php
define("GREETING", "Welcome to W3Schools.com!");

function myTest() {
  echo GREETING;
}
 
myTest();
?>