
<?php

        /////////////////////////////////////////////////////////

        //

        //  AHNAR CSA3004 APT University of Malta

        //  Ian Bugeja 2005

        //

        //////////////////////////////////////////////////////////



      class AHNAR_Tools

      {

             public $maxage;

             public $minage;



             public function __construct()

             {

                  $this->maxage = 0;

                  $this->minage = 0;

             }



             public static function getArrow($color)

             {

                switch ($color)

                {

                        case 0 : $bc = "#00FF00"; $c = "#0000FF"; break; //green, blue

                        case 1 : $bc = "#FFFF00"; $c = "#FF0000"; break; //yellow, red

                        case 2 : $bc = "#fc6a08"; $c = "#0000FF"; break; //orange, blue

                        case 3 : $bc = "#FFFF00"; $c = "#FF0000"; break;

                }



                return  "<nobr>&nbsp;<span style=\"font-size:xx-small; font-weight:bold; color:$c; background:$bc\">-&raquo;</span>&nbsp;</nobr>";

             }



             public function KeywordSort($keywords)   //sorts keywords

             {

                $this->maxage = 0;

                $this->minage = 999;

                if (isset($keywords))

                {

                        foreach($keywords as $word)  //SORT THE ARRAY in descending order by update last, descending order by occurance

                        {

                                $occ[] = $word[1];  //array storing occurance

                                $last[] = $word[2];  //array storing updated last

                                if ($this->maxage < $word[3]) $this->maxage = $word[3]; //MAX Age

                                if ($this->minage > $word[3]) $this->minage = $word[3]; //MIN Age

                        }

                        array_multisort($last, SORT_DESC, $occ, SORT_DESC, $keywords);   // Sorting Function

                }



                return $keywords;

             }



             public static function redError($code, $msg1, $msg2="")

             {

                header("Location: http://" . $_SERVER['HTTP_HOST'] . "/error.php?ecod=$code&emsg1=$msg1&emsg2=$msg2");

                die();

             }



             public static function stopError($code, $msg1)

             {

                if ($code == 1) echo "-->";

                echo "<html><head><title>AHNAR error</title><link rel='stylesheet' href='ahnarstyle.css'></head>";

                echo "<body class='ahnarbody'>";

                echo "<h1 class='ahnarlarge'>AHNAR error<hr style='color:white'></h1>";

                echo "<br>";

                echo $msg1;

                echo "</body></html>";

                die("");

             }

      }

?>