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morontt/net.php

Created October 3, 2024 20:58
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net.php
/**
* examples:
* 10.10.85.13/32
* 10.10.85.13/24
*/
[$subnet, $mask] = explode('/', $cidr);
return (ip2long($clientIP) & ~((1 << (32 - $mask)) - 1)) == ip2long($subnet);
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