wuhei
/ gist:3a62cf28e57be3c124db8f2ad62b7f57
Created
July 25, 2024 08:43
check if ip (ipv4 or ipv6) is within a certain CIDR subnet
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| <?php | |
| function ip_in_cidr($ip, $cidr) { | |
| // Determine IP version with FILTER_VALIDATE_IP | |
| $ip_version = filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) ? 4 : | |
| (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) ? 6 : false); | |
| if (!$ip_version) { | |
| throw new InvalidArgumentException("{$ip} is not a valid IP address"); | |
| } |
wuhei
/ quickSortPHPSplFixedArray
Created
May 5, 2023 12:58
Quicksort PHP SplFixedArray in PHP5.6, based on a key
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| /** | |
| * Quicksorting (with partition) implementation to sort SplFixedArray on a specific key, | |
| * I could not find this and I needed this because I'm stuck on PHP5.6 at work -- 2023-05-04 wuhei | |
| * | |
| * @param $arr SplFixedArray, array to sort | |
| * @param $key mixed, array key to sort on | |
| * @param $desc bool if true, sort descending | |
| * @param $leftIndex int, left index of the array to sort, defaults to 0 | |
| * @param $rightIndex int, right index of the array to sort, defaults to count($arr) - 1 | |
| * @return mixed |