How can the issue of a link being repeatedly loaded be resolved in PHP?

The issue of a link being repeatedly loaded in PHP can be resolved by using a session variable to track whether the link has already been visited. When the link is first visited, set the session variable to indicate that it has been loaded. Subsequently, check this session variable before loading the link again. 

<?php
session_start();

if(!isset($_SESSION['visited'])) {
    // Load the link content here
    $_SESSION['visited'] = true;
}
?>

Keywords

PHP link loading cache optimization

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