What is the function in PHP to retrieve the IP address of a guestbook entry author and how can it be stored in a database?

To retrieve the IP address of a guestbook entry author in PHP, you can use the $_SERVER['REMOTE_ADDR'] variable. This variable stores the IP address of the client making the request to the server. You can then store this IP address in a database by creating a column for it in your guestbook entries table and inserting the retrieved IP address along with the other entry details. 

// Retrieve the IP address of the guestbook entry author
$ip_address = $_SERVER['REMOTE_ADDR'];

// Insert the entry into the database along with the IP address
$query = "INSERT INTO guestbook_entries (author, message, ip_address) VALUES ('$author', '$message', '$ip_address')";
$result = mysqli_query($connection, $query);

if($result) {
    echo "Entry added successfully with IP address: " . $ip_address;
} else {
    echo "Error adding entry with IP address: " . $ip_address;
}

Keywords

PHP function IP address guestbook database

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