01Hello, World
main.php
<?php
echo "Hello, World!\n";Output
Hello, World!
All categories
PHPBeginner
PHP Basics
Learn PHP fundamentals: echo output, variables, data types, arithmetic, and string interpolation for beginners.
02Variables and types
main.php
<?php
$name = "Ada";
$age = 36;
$height = 1.68;
echo "$name $age $height\n";Output
Ada 36 1.68
03Arithmetic operators
main.php
<?php
$a = 10;
$b = 3;
echo $a + $b, "\n";
echo $a % $b, "\n";
echo $a ** $b, "\n";Output
13 1 1000
04String interpolation
main.php
<?php
$user = "Bob";
$score = 87.5;
echo "User: $user\n";
echo "Score: $score\n";Output
User: Bob Score: 87.5