mmm trata con un carriage return /r
Código PHP:
<?php
$Fich = "ip.txt";
$userIp = $_SERVER["REMOTE_ADDR"];
$fh = fopen($Fich, 'a') or die("Error!!");
fwrite($fh, $userIp . "\r\n");
fclose($fh);
$ips = file($Fich);
$count = 0;
foreach ( $ips as $ip )
{
if ( $ip == $userIp )
$count++;
}
if ( $count == 3 )
print 'Hola';
?>