<PRE>
<?php
$url = file_get_contents("http://www.lifevstyle.com/rivalnyc/");
echo "Filesize of URL: ".strlen($url)."\n\n";
echo "Md5 of URL: " . md5($url) . "\n\n";
if (!(file_exists("./url.txt"))) {echo (file_put_contents("./url.txt", $url)) . " bytes written to file\n\n";}
echo "Md5 of file: " . md5_file("./url.txt") . "\n\n";
if (md5($url) === md5_file("./url.txt")) {echo "They match!";}
else {echo "They don't match.";}
?>
</PRE>