What are the potential risks of SQL injections in PHP code, and how can they be prevented in the context of form submissions?

SQL injections in PHP code can allow malicious users to manipulate databases by inserting malicious SQL code into form inputs. To prevent SQL injections in the context of form submissions, you should use prepared statements with parameterized queries to sanitize user input before executing SQL queries. 

// Prevent SQL injection in PHP form submission
// Connect to database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

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

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

// Prepare and bind SQL statement with parameters
$stmt = $conn->prepare("INSERT INTO table_name (column1, column2) VALUES (?, ?)");
$stmt->bind_param("ss", $value1, $value2);

// Set parameters and execute query
$value1 = $_POST['input1'];
$value2 = $_POST['input2'];

$stmt->execute();

// Close connection
$stmt->close();
$conn->close();

Keywords

SQL injection PHP code form submissions risks prevention

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