<?php $courses = [“PHP”, “Laravel”, “React”]; echo count($courses); // example: 3 ?>

<?php $courses = [“PHP”, “Laravel”, “React”]; unset($courses[1]); print_r($courses); ?>

<?php $courses = [“PHP”, “Laravel”, “React”]; $courses[0] = “CSS”; print_r($courses); ?>

<?php $courses = [“PHP”, “Laravel”, “React”]; $courses[] = “CSS”; print_r($courses); ?>

<?php $courses = [“PHP”, “Laravel”, “React”]; echo $courses[0]; // PHP echo $courses[1]; // Laravel ?>

<?php $courses = [“PHP”, “Laravel”, “React”]; print_r($courses); ?>

<?php $arr = array(“Volvo”, 15, [“apples”, “bananas”], true, 15.06); var_dump($arr); ?>

<?php function sayHello($name = “Guest”) { echo “Hello, $name!”; } sayHello(); // Hello, Guest! sayHello(“Krunal”); // Hello, Krunal! ?>

<?php function multiply($x, $y) { return $x * $y; } $result = multiply(4, 5); echo $result; ?>

<?php function add($a, $b) { echo $a + $b; } add(5, 10); ?>