What are the potential pitfalls of not following the EVA principle in PHP scripting, as seen in the forum thread?

Not following the EVA principle in PHP scripting can lead to security vulnerabilities such as SQL injection attacks. To mitigate this risk, it is important to properly sanitize user input before using it in database queries. One way to achieve this is by using prepared statements with parameterized queries in PHP. 

// Example of using prepared statements to prevent SQL injection

// Assuming $conn is your database connection

$stmt = $conn->prepare("SELECT * FROM users WHERE username = ?");
$stmt->bind_param("s", $username);

$username = $_POST['username'];
$stmt->execute();

$result = $stmt->get_result();

while ($row = $result->fetch_assoc()) {
    // Process the retrieved data
}

$stmt->close();
$conn->close();

Keywords

EVA principle PHP scripting forum thread potential pitfalls error types

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