How can PHP developers create a whitelist of allowed table names to mitigate the risks associated with dynamic table name inputs from users?

Developers can create a whitelist of allowed table names by defining an array of acceptable table names and checking user input against this whitelist before executing any database queries. This helps mitigate the risk of SQL injection attacks or unintended data manipulation through dynamic table name inputs. 

<?php

$allowed_tables = ['users', 'products', 'orders']; // Define an array of allowed table names

$user_input = $_POST['table_name']; // Get user input

if (in_array($user_input, $allowed_tables)) {
    // Proceed with executing the query using the validated table name
    $query = "SELECT * FROM " . $user_input;
    // Execute the query
} else {
    // Handle the case where the user input is not in the whitelist
    echo "Invalid table name";
}

?>

Keywords

PHP whitelist table names dynamic inputs security

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