be83910651
auto-patch 280-dev-dev01-2024-01-19T16_41_58 * auto-patch 280-dev-dev01-2024-01-19T16_41_58
16 lines
448 B
PHP
16 lines
448 B
PHP
<?php
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/**
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* Class to provide IPv4 calculations
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*
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* PHP versions 4, 5 and 7
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*
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* @link https://stackoverflow.com/questions/594112/matching-an-ip-to-a-cidr-mask-in-php-5#answer-594134
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*/
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class Net_IPv4 {
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public static function ipInNetwork( $ip, $cidr ) {
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list( $subnet, $bitmask ) = explode( '/', $cidr );
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$bitmask = -1 << ( 32 - $bitmask );
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return ( ip2long( $ip ) & $bitmask ) === ( ip2long( $subnet ) & $bitmask );
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}
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} |