Php code for restricting access from a single IP address and ip address segment

Php code for restricting access from a single IP address and ip address segment

I will share two pieces of php code that limits IP address access. There are two examples of code: restrict access from a single IP address and restrict access from an IP address segment. For more information, see. // Add IP address access restrictions If (getenv ('http _ CLIENT_IP ') & strcasecmp (getenv ('http _ CLIENT_IP'), 'Unknown ')){ $ Userip = getenv ('http _ CLIENT_IP '); } Elseif (getenv ('http _ X_FORWARDED_FOR ') & strcasecmp (getenv ('http _ X_FORWARDED_FOR'), 'Unknown ')){ $ Userip = getenv ('http _ X_FORWARDED_FOR '); } Elseif (getenv ('remote _ ADDR ') & strcasecmp (getenv ('remote _ ADDR'), 'Unknown ')){ $ Userip = getenv ('remote _ ADDR '); } Elseif (isset ($ _ SERVER ['remote _ ADDR ']) & $ _ SERVER ['remote _ ADDR '] & strcasecmp ($ _ SERVER ['remote _ ADDR'], 'Unknown ')){ $ Userip = $ _ SERVER ['remote _ ADDR ']; } $ Banned_ip = array ( "127.0.0.1 ", "203.0.0.1 ", "56.12.50.65 ", "192.168.1.88" ); If (in_array ($ userip, $ banned_ip )) { Die ("Your IP is block to connect! "); } Echo "test code! Test "; ?> Example 2: IP segment restriction: restrict IP segment access. // Add IP address access restrictions If (getenv ('http _ CLIENT_IP ') & strcasecmp (getenv ('http _ CLIENT_IP'), 'Unknown ')){ $ Userip = getenv ('http _ CLIENT_IP '); } Elseif (getenv ('http _ X_FORWARDED_FOR ') & strcasecmp (getenv ('http _ X_FORWARDED_FOR'), 'Unknown ')){ $ Userip = getenv ('http _ X_FORWARDED_FOR '); } Elseif (getenv ('remote _ ADDR ') & strcasecmp (getenv ('remote _ ADDR'), 'Unknown ')){ $ Userip = getenv ('remote _ ADDR '); } Elseif (isset ($ _ SERVER ['remote _ ADDR ']) & $ _ SERVER ['remote _ ADDR '] & strcasecmp ($ _ SERVER ['remote _ ADDR'], 'Unknown ')){ $ Userip = $ _ SERVER ['remote _ ADDR ']; } $ Ban_range_low = ip2long ("217.0.0.0"); // on the ip address segment $ Ban_range_up = ip2long ("217.00000000255"); // ip end $ Ip = ip2long ($ userip]); If ($ ip> $ ban_range_low & $ ip <$ ban_range_up) { Print "Banned "; Exit (); } ?>