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<?php $ip = '192.168.21.1 - 192.168.21.254'; $ip = explode('-', $ip); list($lower, $upper) = $ip; $lower_dec = (float) sprintf("%u", ip2long($lower)); $upper_dec = (float) sprintf("%u", ip2long($upper)); print_r(ip2long($lower)); print_r(ip2long($upper));
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