What potential pitfalls should be considered when trying to prepopulate a selection list in PHP based on the logged-in user?

One potential pitfall to consider when prepopulating a selection list in PHP based on the logged-in user is ensuring that the user has the appropriate permissions to view and select the options. This can help prevent unauthorized access to sensitive information. Additionally, it's important to sanitize and validate the user input to prevent any potential security vulnerabilities. 

<?php
// Check if the user is logged in and has the necessary permissions
if (isset($_SESSION['user_id']) && $_SESSION['user_role'] == 'admin') {
    // Prepopulate the selection list with options based on the logged-in user
    $options = array('Option 1', 'Option 2', 'Option 3');
    
    // Display the selection list
    echo '<select>';
    foreach ($options as $option) {
        echo '<option>' . $option . '</option>';
    }
    echo '</select>';
} else {
    echo 'You do not have permission to view this content.';
}
?>

Keywords

authentication session management database queries form handling user permissions

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