PHP Script Update Checker

update-checker.php

<?php
    /* Checks for updates using a remote CSV file
     * The CSV must be like this
     * versionnumber,versiondescription,type,downloadlink
     * For the type, critical is 1 none critical is 0
     * http://www.fusionstrike.com
     */

    $version = "1"; //Version of the script, to check against CSV
    $critical = FALSE; //Set Critical Variable to False 
    $update = FALSE; //Set None Critical to Fasle too
    $url = "http://yourserver.com/version.csv"; //Link to your external CSV to check against
    $fp = @fopen ($url, 'r') or print ('UPDATE SERVER OFFLINE'); //If the server is unreachable
    $read = fgetcsv ($fp); //PHP fgetcsv
    fclose ($fp); // Closes the connection
    if ($read[0] > $version && $read[2] == "1") { $critical = TRUE; } // If its 1, set ciritcal to true
    if ($read[0] > $version) { $update = TRUE; } // Anything other than 1 set update to true
    if ($critical) { 
        print '<font color="red">There is a critical update available!</font><br/>You can get it at <a href="'.$read[3].'">'.$read[3].'</a> (Version: '.$read[1].') <br/><br/>';
    }else if ($update){
        print '<font color="green">There is a none critical update available!</font><br/>You can get it at <a href="'.$read[3].'">'.$read[3].'</a> (Version: '.$read[1].') <br/><br/>';
    }
    
?>

version.csv