Why is it not recommended to use eval() in PHP for executing code stored in a database?

Using eval() to execute code stored in a database is not recommended due to security risks. It can allow for arbitrary code execution, making your application vulnerable to attacks like code injection. Instead, a safer approach is to store the code in the database as data and then retrieve and execute it using other PHP functions like include or require.

// Retrieve the code from the database
$code = getCodeFromDatabase();

// Execute the retrieved code using include or require
include 'path/to/file.php';