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Obtaining IP addresses from CIDR notation in PHP
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Obtaining IP addresses from CIDR notation in PHP
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Is there a way (or function/class) to get the list of IP addresses from a CIDR notation?
For example, I have 73.35.143.32/27 CIDR and want to get the list of all IP's in this notation. Any suggestions?
Thank you.
I'll edit the aforementioned class to contain a method for that. Here is the code I came up with that might help you until then.
function cidrToRange($cidr) {
$range = array();
$cidr = explode('/', $cidr);
$range[0] = long2ip((ip2long($cidr[0])) & ((-1 << (32 - (int)$cidr[1]))));
$range[1] = long2ip((ip2long($range[0])) + pow(2, (32 - (int)$cidr[1])) - 1);
return $range;
}
var_dump(cidrToRange("73.35.143.32/27"));
//////////////////OUTPUT////////////////////////
// array(2) {
// [0]=>
// string(12) "73.35.143.32"
// [1]=>
// string(12) "73.35.143.63"
// }
/////////////////////////////////////////////////
Returns the low end of the ip range as the first entry in the array, then returns the high end as the second entry.
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