Code Snippets

PHP Snippets

Base Structure

<?php
    // code
?>

<?php echo "Hello, World!"; ?>

<?php $name = "John"; ?>

<?php
    // This is a comment
    # Another comment
    /* Multi-line comment */
?>

Functions

function myFunction() {
    // code
}

function add($a, $b) {
    return $a + $b;
}

function greet($name = "Guest") {
    echo "Hello, $name";
}

$say = function() {
    echo "Hello";
};

Single Page PHP

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    // process form
}

$input = $_POST['input'] ?? '';

header('Location: index.php');
exit;

session_start();
$_SESSION['user'] = 'John';

PHP and Databases

$conn = new mysqli('host', 'user', 'pass', 'db');

$result = $conn->query("SELECT * FROM users");

while($row = $result->fetch_assoc()) {
    echo $row['name'];
}

$stmt = $conn->prepare("INSERT INTO users (name) VALUES (?)");
$stmt->bind_param('s', $name);

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