3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ip = '192.168.21.0 - 192.168.21.255'; $ip = explode('-', $ip); list($lower, $upper) = $ip; print_r($lower); print_r($upper); $lower_dec = (float) sprintf("%u", ip2long($lower)); $upper_dec = (float) sprintf("%u", ip2long($upper));

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43.45 ms | 402 KiB | 5 Q