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<?
include "include/config.inc";
# PARAMETERS:
# itemid
# period
# from
if(!isset($period))
{
$period=0;
}
if(!isset($from))
{
$from=0;
}
$sizeX=900;
$sizeY=200;
$shiftX=10;
$shiftY=13;
$nodata=1;
// Header( "Content-type: text/html");
Header( "Content-type: image/png");
Header( "Expires: Mon, 17 Aug 1998 12:51:50 GMT");
$im = imagecreate($sizeX+$shiftX+61,$sizeY+2*$shiftY+10);
$red=ImageColorAllocate($im,255,0,0);
$green=ImageColorAllocate($im,0,255,0);
$darkgreen=ImageColorAllocate($im,0,150,0);
$blue=ImageColorAllocate($im,0,0,255);
$yellow=ImageColorAllocate($im,255,255,0);
$cyan=ImageColorAllocate($im,0,255,255);
$black=ImageColorAllocate($im,0,0,0);
$gray=ImageColorAllocate($im,150,150,150);
$x=imagesx($im);
$y=imagesy($im);
ImageFilledRectangle($im,0,0,$sizeX+$shiftX+61,$sizeY+2*$shiftY+10,$black);
for($i=0;$i<=$sizeY;$i+=50)
{
ImageDashedLine($im,$shiftX,$i+$shiftY,$sizeX+$shiftX,$i+$shiftY,$darkgreen);
}
for($i=0;$i<=$sizeX;$i+=50)
{
ImageDashedLine($im,$i+$shiftX,$shiftY,$i+$shiftX,$sizeY+$shiftY,$darkgreen);
}
$from_time = time(NULL)-$period-3600*$from;
$to_time = time(NULL)-3600*$from;
$result=DBselect("select count(clock),min(clock),max(clock),min(value),max(value) from history where itemid=$itemid and clock>$from_time and clock<$to_time ");
$count=DBget_field($result,0,0);
if($count>0)
{
$nodata=0;
$minX=DBget_field($result,0,1);
$maxX=DBget_field($result,0,2);
$minY=DBget_field($result,0,3);
$maxY=DBget_field($result,0,4);
}
else
{
unset($maxX);
unset($maxY);
unset($minX);
unset($minY);
}
$minY=0;
$maxY=0.0001;
// $minX=0;
// $maxX=1000;
// echo "MIN/MAX:",$minX," - ",$maxX," - ",$minY," - ",$maxY,"<Br>";
$result=DBselect("select clock,value from history where itemid=$itemid and clock>$from_time and clock<$to_time order by clock");
if(isset($minX)&&($minX!=$maxX)&&($minY!=$maxY))
{
for($i=0;$i<DBnum_rows($result)-3;$i++)
{
$x=DBget_field($result,$i,0);
$x_next=DBget_field($result,$i+1,0);
$x_next_next=DBget_field($result,$i+2,0);
$y=DBget_field($result,$i,1);
$y_next=DBget_field($result,$i+1,1);
$y_next_next=DBget_field($result,$i+2,1);
if(!isset($minY)||($y_next-$y<$minY))
{
$minY=$y_next-$y;
}
if(!isset($maxY)||($y_next-$y>$maxY))
{
$maxY=$y_next-$y;
}
}
$y1=$sizeY*(-$minY)/($maxY-$minY);
$y1=$sizeY-$y1;
ImageDashedLine($im,$shiftX,$y1+$shiftY,$sizeX+$shiftX,$y1+$shiftY,$yellow);
for($i=0;$i<DBnum_rows($result)-3;$i++)
{
$x=DBget_field($result,$i,0);
$x_next=DBget_field($result,$i+1,0);
$x_next_next=DBget_field($result,$i+2,0);
$y=DBget_field($result,$i,1);
$y_next=DBget_field($result,$i+1,1);
$y_next_next=DBget_field($result,$i+2,1);
$x1=$sizeX*($x-$minX)/($maxX-$minX);
$y1=$sizeY*(($y_next-$y)-$minY)/($maxY-$minY);
$x2=$sizeX*($x_next-$minX)/($maxX-$minX);
$y2=$sizeY*(($y_next_next-$y_next)-$minY)/($maxY-$minY);
$y1=$sizeY-$y1;
$y2=$sizeY-$y2;
// echo $x1," - ",$x2," - ",$y1," - ",$y2,"<Br>";
ImageLine($im,$x1+$shiftX,$y1+$shiftY,$x2+$shiftX,$y2+$shiftY,$green);
}
}
else
{
if(isset($minX))
{
ImageLine($im,$shiftX,$shiftY+$sizeY/2,$sizeX+$shiftX,$shiftY+$sizeY/2,$green);
}
}
if($nodata == 0)
{
for($i=0;$i<=$sizeY;$i+=50)
{
ImageString($im, 1, $sizeX+5+$shiftX, $sizeY-$i-4+$shiftY, $i*($maxY-$minY)/$sizeY+$minY , $red);
}
ImageString($im, 1,10, $sizeY+$shiftY+5, date("dS of F Y h:i:s A",$minX) , $red);
ImageString($im, 1,$sizeX+$shiftX-168,$sizeY+$shiftY+5, date("dS of F Y h:i:s A",$maxX) , $red);
}
else
{
ImageString($im, 2,$sizeX/2-50, $sizeY+$shiftY+3, "NO DATA FOUND FOR THIS PERIOD" , $red);
}
ImageStringUp($im,0,2*$shiftX+$sizeX+40,$sizeY+2*$shiftY, "http://zabbix.sourceforge.net", $gray);
ImagePng($im);
ImageDestroy($im);
?>
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