What is the difference between PHP and client-side scripting languages like JavaScript?

PHP is a server-side scripting language, meaning that the code is executed on the server before the webpage is sent to the client's browser. On the other hand, client-side scripting languages like JavaScript are executed on the client's browser. This means that PHP can handle tasks that require server-side processing, such as interacting with databases, while JavaScript is used for tasks that can be done on the client side, like form validation or dynamic content updates. 

<?php
// PHP code snippet
// This PHP code snippet demonstrates how to connect to a database and retrieve data
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// SQL query to retrieve data from a table
$sql = "SELECT id, name, email FROM users";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. " - Email: " . $row["email"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>

Keywords

PHP client-side scripting JavaScript server-side scripting differences

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