Check why my script lags

[ted_chou12]

adding this cause my page to load ten thousand years, so I thought there might be something which repeats itself, can anyone have a look at it please? this basically writes a guests ip and the current time into the txt files, while when the system has the guest's ip already, then update the time instead:

<?php
if ($username == "") {
		$ips = file("guests/iponline.txt");
		$guestip = $_SERVER['REMOTE_ADDR'];
		$datetime = date("Y-m-d H:i:s");
		foreach ($ips as $ip) {$data = explode(",", $ip);
		$ipadd = explode(",", $ip);$iplist[] = $ipadd[0];
		if ($guestip == $data[0]) {$guest = "old";}}
		if ($guest == "") {
		$file = fopen("guests/iponline.txt","a");
		$write = fwrite($file,"$guestip,$datetime");
		fclose($file);}
		else {$line = array_keys($iplist, $guestip);
		$ips[$line[0]] = "$guestip,$datetime";
		$handle = fopen("guests/iponline.txt", "w");
		foreach ($ips as $val) {$write = fwrite($handle, $val);}
		fclose($handle);}}

Thanks

Ted

[ted_chou12]

sorry, forgot to add, the text file looks like:

xxx.xxx.xxx.xxx,2007-02-12 01:52:25

[Hypnos]

How big is iponline.txt?

 

You should consider changing this to a database, or changing it to append only (not read and rewrite).