Added chart_diff.php

git-svn-id: svn://svn.zabbix.com/trunk@365 97f52cf1-0a1b-0410-bd0e-c28be96e8082

1 files changed, 159 insertions, 0 deletions

diff --git a/frontends/php/chart_diff.php b/frontends/php/chart_diff.php
new file mode 100644
index 00000000..8074afda
--- /dev/null
+++ b/frontends/php/chart_diff.php
@@ -0,0 +1,159 @@
+<? 
+	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); 
+?>