How does CodeIgniter achieve security and performance benefits similar to prepared statements?

Using Prepared Statements in CodeIgniter

Prepared statements offer a level of security and performance not available with traditional string concatenation queries. While CodeIgniter does not support prepared statements directly, it does support query bindings, which achieve a similar effect.

In this article, we demonstrate how to use query bindings in CodeIgniter:

<code class="php">$sql = "SELECT * FROM tbl_user WHERE uid = ? and activation_key = ?";
$query = $this->db->query($sql, array($uid, $activation_key)); </code>

This code accomplishes the same purpose as the original attempt with ":id" and ":key," but it uses unnamed placeholders instead. Unnamed placeholders are supported by CodeIgniter, enabling you to simplify your queries while maintaining a level of data security.

It's important to note that using "?" or ":foo" does not indicate true prepared statement functionality. Prepared statements require a separate prepare() and execute() function, which CodeIgniter does not support.

Instead, CodeIgniter uses query bindings to replace the placeholders with the provided data. This provides similar benefits to prepared statements, including protection against SQL injection attacks.

For more information on query bindings and why CodeIgniter does not support prepared statements directly, refer to the resources listed in the answer provided above.

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