What are the best practices for handling time-based conditions in PHP scripts to trigger actions like page redirection?

When handling time-based conditions in PHP scripts to trigger actions like page redirection, it is best to use the `strtotime()` function to compare the current time with a specified time and then redirect the user if the condition is met. This ensures that the redirection occurs accurately based on the desired time criteria.

$current_time = time();
$specified_time = strtotime('2023-01-01 00:00:00');

if ($current_time >= $specified_time) {
    header("Location: new_page.php");
    exit();
}