reading text comes out wrong :(

[smartie_on_computer]

hey every body, i im kina stuck with this,
i have a simple index php file that will open a txt file and get the ip address out like so
<?php
fread("ip.txt",'r');
$address = explode("=", $str);
print "this current given ip address is:".$address[1];
?>
and the txt file
ip=192.1681.2
but the the fil out puts:
this current given ip address is: // /* */
any idea

thanks

[Flash Gordon]

$address = explode("=", $str); $str is undefined.

[smartie_on_computer]

sorry, forgot to change to $ip
but it still doesn't work for me

[Flash Gordon]

<?php
$str = fread("ip.txt",'r');
$address = explode("=", $str);
echo "this current given ip address is:" . $address[1];
?>

[smartie_on_computer]

no... still returns:

this current given ip address is: // /* */

[smartie_on_computer]

still cimes out the same even when i put something differnt in the text file
http://smartie.awardspace.com/

[smartie_on_computer]

found the problem but thanks for the help