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PHP code to restrict access to a single IP and IP range

WBOY
Release： 2016-07-25 09:13:28
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Share two pieces of code in PHP to implement IP access restrictions, which are divided into two examples of codes to restrict access to a single IP and restrict access to IP segments. Friends in need can refer to it.
  2. //Add IP access restrictions
  3. if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
  4. $userip = getenv(' HTTP_CLIENT_IP');
  5. } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
  6. $userip = getenv('HTTP_X_FORWARDED_FOR');
  7. } else if(getenv( 'REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
  8. $userip = getenv('REMOTE_ADDR');
  9. } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER ['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
  10. $userip = $_SERVER['REMOTE_ADDR'];
  11. }
  12. $banned_ip = array (
  13. "127.0. 0.1",
  14. "203.0.0.1",
  15. "56.12.50.65",
  16. "192.168.1.88"
  17. );
  18. if (in_array($userip,$banned_ip))
  19. {
  20. die ( "Your IP is block to connect !");
  21. }
  22. echo "Test code! Test";
  23. ?>
Copy code
Example 2, IP segment Restrict , restrict IP segment access.
  2. //Add IP access restrictions
  3. if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
  4. $userip = getenv(' HTTP_CLIENT_IP');
  5. } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
  6. $userip = getenv('HTTP_X_FORWARDED_FOR');
  7. } else if(getenv( 'REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
  8. $userip = getenv('REMOTE_ADDR');
  9. } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER ['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
  10. $userip = $_SERVER['REMOTE_ADDR'];
  11. }
  12. $ban_range_low=ip2long("217.0.0.0" ; ;$ban_range_up)
  13. {
  14. print "Banned";
  15. exit();
  16. }
  17. ?>

  18. Copy code
Related labels：
php限制单个IP与ip段访问的代码
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