source: devel/www/statistic/loadgraph.php@ 95

<?
include('../db.php');
DB_Init('localhost','root','','is');

if(!array_key_exists('count',$_GET)) die('Musíte zadat poèet jednotek');
if(!array_key_exists('size',$_GET)) die('Musíte zadat velikost jednotky');
if(!array_key_exists('type',$_GET)) $type = ''; else $type = $_GET['type']; 
if($type=='') $type = 'down+up';
$nasobek = 1/60;
if($type=='cpu') $nasobek = 100;
if($type=='online_hosts') $nasobek = 1;

$Pocet = $_GET['count'];
$Jednotka = $_GET['size'];
$Sirka = 750;
$Vyska = 200;
//$Pocet = 24;
//$Jednotka = 60;

$Velikost = $Jednotka/($Sirka/$Pocet);
$Krok = $Sirka/$Pocet;
//$Pocet = floor($Sirka/$Krok)+1;

header("Content-type: image/png");
header("Cache-Control: no-cache");      // Dynamický graf neke±ovat
//$string = $_GET['text'];
$im = @imagecreate($Sirka, $Vyska+14);
$background_color = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0,0,0);
$gray = imagecolorallocate($im, 200,200,200);
$modra = imagecolorallocate($im, 100,100,255);
$red = imagecolorallocate($im, 255,180,180);

// Zobraz mìøítko X
/*
if($Pocet>) 
{
  $PocetX = floor($Pocet/60);
  $KrokX = $Krok*60;
  if($PocetX>24) 
  {
    $PocetX = floor($PocetX/24);
    $KrokX = $KrokX*24;
  }
} else {
  $PocetX = $Pocet;
  $KrokX = $Krok;
}
*/
$PocetX = $Pocet;
$KrokX = $Krok;
for($i=0;$i<=$PocetX;$i++)
{
  $x = $i*$KrokX;
  imageline($im,$x,0,$x,$Vyska,$gray);
  imagestring($im,2,$x+2,$Vyska,'-'.($PocetX-$i),$black);
}

if($Jednotka<($Sirka/$Pocet)) 
{
  $Velikost = $Jednotka;
} else {
  $Pocet = $Sirka;
  $Krok = $Sirka/$Pocet;
}

//echo('Maximum...<br>');
//flush();

// Zji¹tìní maxima
DB_Query('SELECT ('.$type.') FROM traffic ORDER BY time DESC LIMIT 0,'.$Pocet*$Velikost);
while($Row = DB_Row())
{
  if($Max < $Row[0]) $Max = $Row[0];
}

//$Max = 60*85000;
// WHERE (UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(time)) <= (60*'.$Pocet.')');
//$Row = DB_Row();
$Max = floor($Max*$nasobek*1.01);

// Zobraz mìøítko Y
$PocetY = (floor($Max/5120));
for($i=0;$i<=$PocetY;$i++)
{
  $y = $Vyska-1-(5120*$i/$Max/1.01*$Vyska);
  imageline($im,0,$y,$Sirka-1,$y,$gray);
  imagestring($im,2,2,$y,$i*5,$black);
}

// Ramecek
imagerectangle($im,0,0,$Sirka-1,$Vyska-1,$black);

$Ted = time();
$x = 1;
$BodyAVG = array();
$BodyMAX = array();
for($I=0;$I<$Pocet;$I++)
{
  $EndTime = $Ted-$I*60*$Velikost;
  $StartTime = $EndTime-60*$Velikost;
  DB_Query('SELECT AVG('.$type.'),MAX('.$type.') FROM traffic WHERE time>FROM_UNIXTIME('.$StartTime.') AND time<FROM_UNIXTIME('.$EndTime.')');
  $Row = DB_Row();
  //print_r($Row);
  //echo($Row[0].' '.$StartTime.'-'.$EndTime.'('.($EndTime-$StartTime).")\n");
  $Total = $Vyska-2-$Row[0]*$nasobek/$Max*$Vyska+1;
  $BodyAVG[] = $Sirka-$x;
  $BodyAVG[] = $Total;
  $Total = $Vyska-2-$Row[1]*$nasobek/$Max*$Vyska+1;
  $BodyMAX[] = $Sirka-$x;
  $BodyMAX[] = $Total;
  $x += $Krok;
}
// Prùmìrování
/*
for($i=1;$i<(count($BodyAVG)-8);$i=$i+2)
{
  $Body[$i] = ($Body[$i+2]+$Body[$i+4]+$Body[$i+6]+$Body[$i+8])/4;
}
*/

array_unshift($BodyAVG,$Vyska-1);
array_unshift($BodyAVG,$Sirka-1);
array_unshift($BodyMAX,$Vyska-1);
array_unshift($BodyMAX,$Sirka-1);
$BodyAVG[] = 0;
$BodyAVG[] = $Vyska-1;
$BodyMAX[] = 0;
$BodyMAX[] = $Vyska-1;
imagefilledpolygon($im,$BodyMAX,count($BodyMAX)/2,$red);
imagefilledpolygon($im,$BodyAVG,count($BodyAVG)/2,$modra);
//imagepolygon($im,$BodyAVG,count($BodyAVG)/2,$black);
imagestring($im, 3, $Sirka-94, 5,"Max. ".$Max.' B/s', $black);          // Maximum v grafu

// Zobraz popisky Y
for($i=0;$i<=$PocetY;$i++)
{
  $y = $Vyska-1-(5120*$i/$Max/1.01*$Vyska);
  imagestring($im,2,2,$y,$i*5,$black);
}

imagepng($im);
imagedestroy($im);
?>