Are there any specific PHP functions or methods that can be used to access server variables related to user login information?

To access server variables related to user login information in PHP, you can use the $_SERVER superglobal array. Specifically, you can access variables like $_SERVER['REMOTE_ADDR'] for the user's IP address, $_SERVER['HTTP_USER_AGENT'] for the user's browser information, and $_SERVER['HTTP_REFERER'] for the referring page. 

$user_ip = $_SERVER['REMOTE_ADDR'];
$user_browser = $_SERVER['HTTP_USER_AGENT'];
$referrer = $_SERVER['HTTP_REFERER'];

echo "User IP Address: " . $user_ip . "<br>";
echo "User Browser: " . $user_browser . "<br>";
echo "Referring Page: " . $referrer . "<br>";

Keywords

PHP server variables user login functions methods

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