How can the issue of SQL Injection be addressed in PHP scripts like the one mentioned in the thread?

To address the issue of SQL Injection in PHP scripts, you should use prepared statements with parameterized queries instead of directly inserting user input into SQL queries. This helps prevent malicious SQL code from being injected into the query. 

// Original vulnerable code
$username = $_POST['username'];
$password = $_POST['password'];

$query = "SELECT * FROM users WHERE username='$username' AND password='$password'";
$result = mysqli_query($connection, $query);

// Fixed code using prepared statements
$username = $_POST['username'];
$password = $_POST['password'];

$query = "SELECT * FROM users WHERE username=? AND password=?";
$stmt = mysqli_prepare($connection, $query);
mysqli_stmt_bind_param($stmt, "ss", $username, $password);
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);

Keywords

SQL Injection PHP scripts Prepared Statements PDO Security

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