I would just like to try and clear up simply that if storing IPV4 addresses in an SQL database you should use an unsigned int (4 bytes).
The easiest way to do this in PHP is to use sprintf():
$dottedFormatAddress = '127.0.0.1';
$ipv4address = sprintf("%u", ip2long($dottedFormatAddress));
Primary reasons are it's compatible with database functions like MySQL's INET_ATON & INET_NTOA (which also use unsigned int's), it's efficient, and it's the most common format used by IP lookup databases.
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Server IP: 69.147.83.197
Probable Submitter: 78.105.235.11
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Manual Page -- http://www.php.net/manual/en/function.ip2long.php
Edit -- https://master.php.net/note/edit/97982
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Del: other reasons-- https://master.php.net/note/delete/97982
Reject -- https://master.php.net/note/reject/97982
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