What are the potential pitfalls of using multiple selection options in a PHP form for database queries?

Potential pitfalls of using multiple selection options in a PHP form for database queries include the risk of SQL injection attacks if user input is not properly sanitized and the complexity of constructing dynamic queries based on the selected options. To mitigate these risks, it is important to use prepared statements and parameterized queries to prevent SQL injection and carefully handle the logic for building the query based on the selected options. 

// Assuming $conn is the database connection object

// Sanitize and retrieve selected options from the form
$selectedOptions = isset($_POST['options']) ? $_POST['options'] : [];
$selectedOptions = array_map(function($option) use ($conn) {
    return mysqli_real_escape_string($conn, $option);
}, $selectedOptions);

// Build the query dynamically based on the selected options
$query = "SELECT * FROM table_name WHERE ";
foreach ($selectedOptions as $option) {
    $query .= "column_name = '$option' OR ";
}
$query = rtrim($query, " OR ");

// Prepare and execute the query using prepared statements
$stmt = $conn->prepare($query);
$stmt->execute();
$result = $stmt->get_result();

// Process the query result as needed
while ($row = $result->fetch_assoc()) {
    // Process each row
}

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