Created
March 5, 2022 01:02
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PHP: Retrieve the IP address of the visitor.
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<?php | |
/** | |
* Retrieve the IP address of the visitor. | |
* | |
* @return string | |
*/ | |
function getIPAddress() | |
{ | |
foreach (['HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR'] as $key) { | |
if (array_key_exists($key, $_SERVER) === true) { | |
foreach (explode(',', $_SERVER[$key]) as $ip) { | |
$ip = trim($ip); // just to be safe | |
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false) { | |
return $ip; | |
} | |
} | |
} | |
} | |
} |
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