/piː eɪtʃ piː/
noun — “the server-side scripting language that quietly powers millions of dynamic websites without ever asking for credit.”
PHP (Hypertext Preprocessor) is a widely used server-side scripting language designed for web development but also used as a general-purpose programming language. PHP code runs on a web server, generating dynamic HTML content that is sent to a user’s browser, allowing websites and web applications to interact with databases, process forms, manage sessions, and perform countless server-side tasks. PHP is tightly integrated with Backend Development, Web Development, and Database Management.
PHP is embedded within HTML using <?php ... ?> tags, enabling developers to mix static content and dynamic behavior seamlessly. It supports a vast ecosystem of frameworks (like Laravel, Symfony, and CodeIgniter) and content management systems, including WordPress, Drupal, and Joomla.
In practice, using PHP might include:
// Simple PHP script
<?php
echo "Hello, world!";
?>
// Handling a form submission
<?php
$name = $_POST['name'] ?? 'Guest';
echo "Welcome, " . htmlspecialchars($name);
?>
// Database interaction (MySQL example)
$conn = new mysqli('localhost', 'user', 'password', 'my_db');
$result = $conn->query('SELECT id, name FROM users');
while ($row = $result->fetch_assoc()) {
echo $row['name'] . "<br>";
}
$conn->close();PHP is like a backstage crew for web pages: the audience (browser) only sees the result, while PHP handles the logic, database queries, and dynamic content behind the scenes.
See Web Development, Backend Development, Database Management, Local Development Environment, WordPress.