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IP class 비교 함수

· 2014-08-04 (월) 22:23:55 · 3912

ip를 대역으로 비교할 일이 생겨서... 

 

function compareIpClass($lip, $rip, $mask=32) { 

  $mask = pow(256,4)>>(!!($mask%8) ? 32 : $mask); 

  $lip = (int)(ip2long($lip)/$mask); 

  $rip = (int)(ip2long($rip)/$mask); 

  return $lip === $rip; 

} 

 

compareIpClass('192.168.1.111', '192.168.1.112', 32); // false 

compareIpClass('192.168.1.111', '192.168.1.112', 24); // true 

compareIpClass('192.168.1.111', '192.168.1.112', 16); // true 

compareIpClass('192.168.1.111', '192.168.1.112', 8); // true  

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