Hi,
i want to create dynamic bar graph. i am using the following code. it is woriking fine bt when i implement this in ajax page it show gargabe values.
Code: Select all
include("../../includes/configure.php");
for($j=0; $j< 12; $j++)
{
$today = mktime(0,0,0,date("m")- $j, date("d"),date("y"));
$da=date("M",$today).' '.date("y",$today);
$currentmonth=$da=date("m",$today);
$sql="SELECT sum(`totalamount`) FROM `hj_employers_payment` where employers_id='1' and substring(substring_index(payment_date,'-',2),6)='$currentmonth' group by employers_id";
//echo $sql;
$query=mysql_query($sql);
if(mysql_num_rows($query))
{
$result=mysql_fetch_array($query);
$amt=$result[0];
}
else
{
$amt=0;
}
$arraymonth[$da].=$amt;
}
//print_r($values);
$values=$arraymonth;
$img_width=600;
$img_height=300;
$margins=25;
# ---- Find the size of graph by substracting the size of borders
$graph_width=$img_width - $margins * 2;
$graph_height=$img_height - $margins * 2;
$img=imagecreate($img_width,$img_height);
$bar_width=30; // for bard with change here
$total_bars=count($values);
$gap= ($graph_width- $total_bars * $bar_width ) / ($total_bars +1);
# ------- Define Colors ----------------
$bar_color=imagecolorallocate($img,0,64,128);
$background_color=imagecolorallocate($img,240,240,255);
$border_color=imagecolorallocate($img,200,200,200);
$line_color=imagecolorallocate($img,220,220,220);
# ------ Create the border around the graph ------
imagefilledrectangle($img,0,0,$img_width-2,$img_height-2,$border_color);
imagefilledrectangle($img,$margins,$margins,$img_width-1-$margins,$img_height-1-$margins,$background_color);
# ------- Max value is required to adjust the scale -------
$max_value=max($values);
$ratio= $graph_height/$max_value;
# -------- Create scale and draw horizontal lines --------
$horizontal_lines=20;
$horizontal_gap=$graph_height/$horizontal_lines;
for($i=1;$i<=$horizontal_lines;$i++){
$y=$img_height - $margins - $horizontal_gap * $i ;
imageline($img,$margins,$y,$img_width-$margins,$y,$line_color);
$v=intval($horizontal_gap * $i /$ratio);
imagestring($img,0,5,$y-5,$v,$bar_color);
}
# ----------- Draw the bars here ------
for($i=0;$i< $total_bars; $i++){
# ------ Extract key and value pair from the current pointer position
list($key,$value)=each($values);
$x1= $margins + $gap + $i * ($gap+$bar_width) ;
$x2= $x1 + $bar_width;
$y1=$margins +$graph_height- intval($value * $ratio) ;
$y2=$img_height-$margins;
imagestring($img,0,$x1+3,$y1-10,$value,$bar_color);imagestring($img,0,$x1+3,$img_height-15,$key,$bar_color);
imagefilledrectangle($img,$x1,$y1,$x2,$y2,$bar_color);
}
header("Content-type:image/png");
imagepng($img);
?>
thanks in advance...
pickle | Please use [ code=php ], [ code=text ], etc tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: