What is the correct way to access server variables like REMOTE_ADDR and PHP_SELF in PHP code?

When accessing server variables like REMOTE_ADDR and PHP_SELF in PHP code, you should use the $_SERVER superglobal array. These variables are stored in $_SERVER with keys like 'REMOTE_ADDR' and 'PHP_SELF'. To access them, simply use $_SERVER['REMOTE_ADDR'] and $_SERVER['PHP_SELF'] respectively. 

$remote_address = $_SERVER['REMOTE_ADDR'];
$php_self = $_SERVER['PHP_SELF'];

Keywords

server variables REMOTE_ADDR PHP_SELF access PHP code

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