What potential issues can arise from using $_SERVER['REMOTE_ADDR'] to track page views in PHP?

Using $_SERVER['REMOTE_ADDR'] to track page views in PHP can be unreliable as it relies on the user's IP address, which can change frequently especially for users on mobile networks or behind proxies. To solve this issue, a more reliable method would be to use session cookies to track unique visitors instead. 

session_start();

if(!isset($_SESSION['page_views'])) {
    $_SESSION['page_views'] = 1;
} else {
    $_SESSION['page_views']++;
}

echo "Total page views: " . $_SESSION['page_views'];

Keywords

$_SERVER['REMOTE_ADDR'] page views tracking potential issues PHP

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