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  1. <?php
  2.  
  3. function checkIpWhitelist($ranges, $ip) {
  4.     foreach ($ranges as $range) {
  5.         if (isIpInRange($range, $ip)) return true;
  6.     }
  7.  
  8.     return false;
  9. }
  10.  
  11. function isIpInRange($rangeString, $ip) {
  12.     if (!filter_var($ip, FILTER_VALIDATE_IP)) {
  13.         throw new InvalidArgumentException('Provide a valid ip address, please. "'.$ip.'" is not valid');
  14.     }
  15.  
  16.     if (!preg_match('!^\d+(/\d+)?\.\d+(/\d+)?\.\d+(/\d+)?\.\d+(/\d+)?$!', $rangeString)) {
  17.         throw new InvalidArgumentException('Provide a valid range, please. "'.$rangeString.'" is not valid');
  18.     }
  19.  
  20.     $range = array_map(function ($item) {
  21.         $parts = explode('/', $item);
  22.         if (count($parts) == 1) $parts[1] = $parts[0];
  23.  
  24.         return array_map('intval', $parts);
  25.     }, explode('.', $rangeString));
  26.  
  27.     for ($i = 0; $i < 4; $i++) {
  28.         // negative and non-numbers caught by the regular expression
  29.         if ($range[$i][0] > $range[$i][1] || $range[$i][0] > 255 || $range[$i][1] > 255) {
  30.             throw new InvalidArgumentException('Provide a valid range, please. "'.$rangeString.'" is not valid');
  31.         }
  32.     }
  33.  
  34.     $ip = explode('.', $ip);
  35.     for ($i = 0; $i < 4; $i++) {
  36.         if (!($range[$i][0] <= $ip[$i] && $ip[$i] <= $range[$i][1])) return false;
  37.     }
  38.     return true;
  39. }
  40.  
  41.  
  42. $yIp = '192.168.59.3';
  43. $whitelist = array(
  44. 	array(
  45. 		'192.168.60.1',
  46. 		'192.168.0/50.3',
  47. 		'192.160/170.59.4'
  48. 	),
  49. 	array(
  50. 		'192.168.60.1',
  51. 		'192.168.0/50.3',
  52. 		'192.160/170.59.3',
  53. 		'192.168.59.3'
  54. 	),
  55. 	array(
  56. 		'192.168.60.1',
  57. 		'192.168.0/50.3',
  58. 		'192.160/167.59.3',
  59. 		'190/193.160/169.50/60.0/5',
  60. 		'192.168.59.3'
  61. 	)
  62. );
  63.  
  64. foreach($whitelist as $list){
  65. 	var_dump("\n\n" . (checkIpWhitelist($list, $yIp) ? 'IP in range!' : 'IP not in range') . "\n\n");
  66. }
  67. ?>
Success #stdin #stdout 0.02s 24192KB
comments (?)
stdin
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Standard input is empty
stdout
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string(19) "

IP not in range

"
string(16) "

IP in range!

"
string(16) "

IP in range!

"
https://ideone.com/L4xsn2
IP Whitelist Search
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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