How can I test a portion of my php code without everyone seeing it?

One quick way to test your code (php) without setting up a copy of the page / functionality, is to simply limit the modifications by IP address.  You can find out your IP address from various sites on the 'Net, then plug it into your script like so:

One quick way to test your code (php) without setting up a copy of the page / functionality, is to simply limit the modifications by IP address.  You can find out your IP address from various sites on the 'Net, then plug it into your script like so:

$testing = false;

if($_SERVER['REMOTE_ADDR'] == "your.ip.address.here") {

  $testing = true;
}

Now you can check for the "$testing" variable anywhere you have new code being executed.