Can you Bind a Table Name in a PDO Statement?

PHP PDO: Is it possible to bind a table name?

Question:

Can a table name be bound in a PDO statement?

Answer:

No. Binding a table name is not possible. It is crucial to implement a whitelist of acceptable table names to prevent unauthorized access to sensitive data.

Safe and Secure Approach:

Instead of binding table names, consider using a predefined set of authorized table names within your class or application logic. This approach ensures that only approved tables are accessible, enhancing the security of your application.

For example, you can create an abstract table class that provides an interface for accessing table metadata:

abstract class AbstractTable {
    private $table;
    private $db;

    public function __construct(PDO $pdo) {
        $this->db = $pdo;
    }

    public function describe() {
        return $this->db->query("DESCRIBE `$this->table`")->fetchAll();
    }
}

Then, create a specific table class that extends the abstract class and specifies the authorized table name:

class SomeTable extends AbstractTable {
    private $table = 'some_table';
}

With this approach, you can safely retrieve column metadata for the specified table:

$pdo = new PDO(...);
$table = new SomeTable($pdo);
$fields = $table->describe();

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