How can SQL security vulnerabilities be addressed in PHP scripts to prevent unexpected outcomes in Java?

SQL security vulnerabilities in PHP scripts can be addressed by using prepared statements with parameterized queries instead of directly embedding user input into SQL queries. This helps prevent SQL injection attacks and ensures that user input is properly sanitized before being executed. By implementing this best practice, unexpected outcomes in Java due to SQL vulnerabilities can be mitigated. 

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

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

// Prepare a SQL statement with a parameterized query
$stmt = $conn->prepare("SELECT * FROM users WHERE username = ?");
$stmt->bind_param("s", $username);

// Set the username parameter and execute the query
$username = $_POST['username'];
$stmt->execute();

// Process the results
$result = $stmt->get_result();
while ($row = $result->fetch_assoc()) {
    // Handle the retrieved data
}

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

Keywords

SQL injection prepared statements PDO parameterized queries escaping inputs

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