PHP

Syntax Basics

<?php echo "Hello, PHP!"; $name = "Alice"; $age = 25; ?>

Variables & Types

$int = 10; $float = 5.6; $str = "Text"; $bool = true; $array = [1, 2, 3];

Conditions

if ($age >= 18) { echo "Adult"; } else { echo "Minor"; }

Loops

for ($i = 0; $i < 5; $i++) { echo $i; } foreach ($array as $value) { echo $value; }

Functions

function greet($name) { return "Hello " . $name; } echo greet("Bob");

Forms & POST

<form method="post"> <input name="user"> <button type="submit">Send</button> </form> <?php if ($_SERVER["REQUEST_METHOD"] == "POST") { echo $_POST["user"]; } ?>