How can the phpinfo() function be used to troubleshoot issues related to server variables like REMOTE_ADDR in PHP?

When troubleshooting server variables like REMOTE_ADDR in PHP, the phpinfo() function can be used to display all the server variables being passed to the PHP script. This can help identify if the REMOTE_ADDR variable is being passed correctly or if there are any issues with it. By checking the phpinfo() output, you can verify the value of REMOTE_ADDR and ensure it is being populated correctly by the server. 

<?php
// Display all server variables using phpinfo()
phpinfo();
?>

Keywords

phpinfo server variables REMOTE_ADDR troubleshooting PHP

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