<?php

$con=mysqli_connect("localhost","ip","ip","ip");

if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

if($ip) {

$eintragen = mysqli_query($con,"INSERT INTO `ip`(`ip`) VALUES ('$ip')");
mysqli_close($con);
}

$ip = getenv ("REMOTE_ADDR");

echo $_SERVER['REMOTE_ADDR'];

?>