You can also use $_SERVER[‘REMOTE_ADDR’] for which IP address of the client requesting is given by the web server. $whitelist = array( ‘127.0.0.1’, ‘::1’ ); if(!in_array($_SERVER[‘REMOTE_ADDR’], $whitelist)){ // not valid }
You want to look at the nodes in /sys/class/net/ I experimented with mine: Wire Plugged in: eth0/carrier:1 eth0/operstate:unknown Wire Removed: eth0/carrier:0 eth0/operstate:down Wire Plugged in Again: eth0/carrier:1 eth0/operstate:up Side Trick: harvesting all properties at once the easy way: grep “” eth0/* This forms a nice list of key:value pairs.
Now it’s an even bigger mess than it was when this question was first asked. From reading all the responses and blog posts I could find, here’s a summary. I also set up this page to test all these methods of measuring the zoom level. [↑ broken link. Archived copy → here]. Edit (2011-12-12): I’ve … Read more
How about implementing something like SO does with the CAPTCHAs? If you’re using the site normally, you’ll probably never see one. If you happen to reload the same page too often, post successive comments too quickly, or something else that triggers an alarm, make them prove they’re human. In your case, this would probably be … Read more