Get Remote Timestamp

<?php
function GetRemoteLastModified($uri) {
    // default
    $unixtime = 0;

    $fp = fopen( $uri, "r" );
    if (!$fp) {return;}

    $MetaData = stream_get_meta_data( $fp );

    foreach( $MetaData['wrapper_data'] as $response) {
        // case: redirection
        if( substr( strtolower($response), 0, 10 ) == 'location: ' )
        {
            $newUri = substr( $response, 10 );
            fclose( $fp );
            return GetRemoteLastModified( $newUri );
        }
        // case: last-modified
        elseif( substr( strtolower($response), 0, 15 ) == 'last-modified: ' )
        {
            $unixtime = strtotime( substr($response, 15) );
            break;
        }
    }
    fclose( $fp );
    return $unixtime;
}

function showDayTime($theday, $full = false) {
  return (!$theday)?"None":date("m/d/" . (($full)?'Y':'y') . " h:ia", $theday);
}

$stamp = GetRemoteLastModified('http://www.iloveinns.com/images/mastlogo.gif');
$stamp = showDayTime($stamp);
echo $stamp;
echo "\n";