Menu
Possible Duplicate:
Function to get user ip address
<?PHP $ipaddress = $_SERVER["REMOTE_ADDR"]; echo "Your IP is $ipaddress!"; ?> I was told this way of getting ip address has issues such as being able to fool. Is there a better way to gather ip address? looking for tutorials of better way to get ip address?
422
Using getenv() function: To get the IP Address,we use getenv(“REMOTE_ADDR”) command. The getenv() function in PHP is used for retrieval of values of an environment variable in PHP. It is used to return the value of a specific environment variable.
$_SERVER['REMOTE_ADDR'] Returns the IP address from where the user is viewing the current page. $_SERVER['REMOTE_HOST'] Returns the Host name from where the user is viewing the current page. $_SERVER['REMOTE_PORT']
The simplest way is to use $_SERVER with 'REMOTE_ADDR', it will return the user's IP address who is currently viewing the page. Example using ['REMOTE_ADDR'] to identify the server's IP address in PHP.
The FILTER_VALIDATE_IP filter validates an IP address. Possible flags: FILTER_FLAG_IPV4 - The value must be a valid IPv4 address. FILTER_FLAG_IPV6 - The value must be a valid IPv6 address.
$_SERVER['REMOTE_ADDR'] is the only reliable IP address you'll get - it's extracted directly from the TCP stack and is where the current connection was established from. This means if the user is connecting via a proxy, you'll get the proxy's address, not the user's.
Any of the other header-based ones are unreliable, as HTTP headers are trivial to forge. You can use the information from them, if you'd like, as long as you don't TRUST it.
56
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
