Title here
Summary here
PHP
Basic Syntax
<!DOCTYPE html>
<html>
<head>
<title>PHP Intro</title>
</head>
<body>
<h1>Welcome to PHP</h1>
<?php
function calc($x, $y) {
if ($x > $y)
for ($i = 1; $i <= 5; $i++) {
echo "Hi";
}
}
$x = 1;
$y = 0;
calc($x, $y);
?>
</body>
</html>
Forms
<form method="POST" action="process.php">
<input type="text" name="username" placeholder="Enter your name">
<input type="submit" value="Submit">
</form><?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$username = $_POST['username']; // Get form data
echo "Hello, $username!";
}
?>
MySQL
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "test_db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// Query data
$sql = "SELECT id, name FROM users";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo "ID: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
}
} else {
echo "0 results";
}
$conn->close();
?>