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<?php if(!function_exists('filter_var')) die('filter_var not available'); foreach(array( '', 'x', ' ', '0.0.0.0', '255.255.255.255', // Some bad IP '127.0.0.1', // localhost '10.0.0.0', '192.168.0.1', 'fe80::414a:a44e:53f2:e694%21', 'fe80::414a:a44e:53f2:e694', // Private IP addresses '8.8.8.8', '88.149.1.2', // Good IPv4 '2607:f0d0:1002:51::4', '2001:4860:b002::68', '2001:0db8:85a3:0042:1000:8a2e:0370:7334', // Good IPv6 ) as $ip) { echo "v4 '$ip' => "; var_dump(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)); echo "v6 '$ip' => "; var_dump(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)); }
Output for git.master, git.master_jit, rfc.property-hooks
v4 '' => bool(false) v6 '' => bool(false) v4 'x' => bool(false) v6 'x' => bool(false) v4 ' ' => bool(false) v6 ' ' => bool(false) v4 '0.0.0.0' => string(7) "0.0.0.0" v6 '0.0.0.0' => bool(false) v4 '255.255.255.255' => string(15) "255.255.255.255" v6 '255.255.255.255' => bool(false) v4 '127.0.0.1' => string(9) "127.0.0.1" v6 '127.0.0.1' => bool(false) v4 '10.0.0.0' => string(8) "10.0.0.0" v6 '10.0.0.0' => bool(false) v4 '192.168.0.1' => string(11) "192.168.0.1" v6 '192.168.0.1' => bool(false) v4 'fe80::414a:a44e:53f2:e694%21' => bool(false) v6 'fe80::414a:a44e:53f2:e694%21' => bool(false) v4 'fe80::414a:a44e:53f2:e694' => bool(false) v6 'fe80::414a:a44e:53f2:e694' => string(25) "fe80::414a:a44e:53f2:e694" v4 '8.8.8.8' => string(7) "8.8.8.8" v6 '8.8.8.8' => bool(false) v4 '88.149.1.2' => string(10) "88.149.1.2" v6 '88.149.1.2' => bool(false) v4 '2607:f0d0:1002:51::4' => bool(false) v6 '2607:f0d0:1002:51::4' => string(20) "2607:f0d0:1002:51::4" v4 '2001:4860:b002::68' => bool(false) v6 '2001:4860:b002::68' => string(18) "2001:4860:b002::68" v4 '2001:0db8:85a3:0042:1000:8a2e:0370:7334' => bool(false) v6 '2001:0db8:85a3:0042:1000:8a2e:0370:7334' => string(39) "2001:0db8:85a3:0042:1000:8a2e:0370:7334"

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