What is the potential issue with the code snippet provided in the forum thread related to PHP queries?

The potential issue with the code snippet provided is that it is vulnerable to SQL injection attacks as it directly concatenates user input into the SQL query. To solve this issue, you should use prepared statements with parameterized queries to safely handle user input. 

// Fix for SQL injection vulnerability using prepared statements

// Assuming $conn is the database connection

// User input
$user_input = $_GET['user_input'];

// Prepare the SQL statement with a placeholder
$stmt = $conn->prepare("SELECT * FROM table WHERE column = ?");
$stmt->bind_param("s", $user_input);

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

// Bind the result
$result = $stmt->get_result();

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

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

Keywords

SQL injection prepared statements mysqli_real_escape_string security vulnerability database query.

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