PHP

PHP (PHP: Hypertext Preprocessor) is a scripting language used primarily in server-side solutions for creating dynamic web pages.

To write the code we can use Notepad++

<!DOCTYPE html>
<html>
	<head>
		<title>PHP tervitus</title>
	</head>
	<body>
	<h1>PHP tervitus</h1>
	<!--php koodi osa-->
	<?php
	
	echo "Tere hommikust!";
	$tekst = "TARpv22";
	echo "<br>";
	echo $tekst;
	
	//matemaatika tehed
	$arv1 = 10;
	$arv2 = 12;
	
	echo "<br>";
	echo "Liitmine: ".($arv1+$arv2);
	echo "<br>";
	echo "Lahutamine: ".($arv1-$arv2);
	echo "<br>";
	echo "Korrutamine: ".($arv1*$arv2);
	echo "<br>";
	echo "Jagamine: ".($arv1/$arv2);
	echo "<br>";
	echo "Arv1 ruudus: ".pow($arv1, 2);
	echo "<br>";
	
	?>	
	</body>
</html>
Must be blue, meaning saved and file type is .php

ie after htdocs

http://localhost/ your folder name