3v4l.org

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<?php //Используется так: function net_match ( $network , $ip ) { $ip_arr = explode ( '/' , $network ); $network_long = ip2long ( $ip_arr [ 0 ]); $x = ip2long ( $ip_arr [ 1 ]); $mask = long2ip ( $x ) == $ip_arr [ 1 ] ? $x : 2^( 32 - $ip_arr [ 1 ]); $ip_long = ip2long ( $ip ); echo ">".$ip_arr[1]."> ".decbin($mask)."\n"; return ( $ip_long & $mask ) == ( $network_long & $mask ); } echo net_match ( '192.168.0.0/2', '192.168.0.15' );
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
>2> 11100
preferences:
319.88 ms | 406 KiB | 456 Q