PHP PDO 中可以綁定表名嗎？

Bind Table Name in PHP PDO

Query:

Can you bind a table name in PHP PDO?

Issue:

Attempting to bind a table name using bindValue() results in an error. The issue arises when trying to dynamically set the table name through user input.

Solution:

No, it's not possible to bind a table name directly.

This is due to security concerns, as it could allow users to access arbitrary tables in the database. Instead, it is recommended to:

• Hard-code the table name in the SQL query.
• Use an abstraction layer to handle table names securely.

Secure Implementation with Abstraction Layer:

To create a secure class for accessing table data, follow these steps:

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

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

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

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

Now, use the class to access the table data safely:

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

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