A quick little Access Control List (ACL) snippet I made for PHP/HTML. Enjoy!
<?php $acl = array( // Populate with IP/Subnet Mask pairs. // Any zero bit in the subnet mask acts as a wildcard in the IP address check. array("192.168.10.24","255.255.255.255"), ); $acl_allow = false; for ($i = 0; $i < count($acl); $i++) { $ip2chk = (ip2long($acl[$i][0]) & ip2long($acl[$i][1])); if ((ip2long($_SERVER['REMOTE_ADDR']) & $ip2chk) == $ip2chk) { $acl_allow=true; } } if ($acl_allow) { // Put all test stuff here!! Only visible to ACL. phpInfo(); } else { echo "<a href='http://this-page-intentionally-left-blank.org/whythat.html' target='_blank'>This page intentionally left blank.</a>"; } ?>
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