How can PHP scripts be optimized to handle user preferences and redirecting efficiently?

To optimize PHP scripts to handle user preferences and redirecting efficiently, you can store user preferences in sessions or cookies to avoid querying the database repeatedly. Additionally, you can use conditional statements to efficiently redirect users based on their preferences. 

<?php
session_start();

// Store user preferences in sessions
$_SESSION['user_preferences'] = ['theme' => 'dark', 'language' => 'english'];

// Check user preferences and redirect accordingly
if ($_SESSION['user_preferences']['theme'] == 'dark') {
    header('Location: dark_theme.php');
} else {
    header('Location: light_theme.php');
}
?>

Keywords

PHP optimization user preferences redirecting efficiency

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