What is the issue with the PHP MySQL INSERT statement in the provided code snippet?

The issue with the PHP MySQL INSERT statement in the provided code snippet is that the values being inserted into the database are not properly escaped, which can lead to SQL injection vulnerabilities. To solve this issue, we should use prepared statements with parameterized queries to securely insert data into the database. 

// Fix for the PHP MySQL INSERT statement using prepared statements with parameterized queries

// Establish a connection to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

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

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

// Prepare the INSERT statement with placeholders for the values
$stmt = $conn->prepare("INSERT INTO users (username, email) VALUES (?, ?)");

// Bind the parameters and execute the statement
$stmt->bind_param("ss", $username, $email);

// Set the values for the parameters
$username = "john_doe";
$email = "john.doe@example.com";

// Execute the statement
$stmt->execute();

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

Keywords

PHP MySQL INSERT statement syntax error database connectivity

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