Ok,
I have the following code for creatnig a bar chart (called grid.php). I call it in my program using <img src="grid.php">. The only problem is I want to pass an array of variables to it (graphValues) but
am having trouble. If I call it as a function it doesn't like the header("Content-type: image/png"); line as they have already been defined. Any idea? Code is below for reference.
Cheers,
NM.
<?
// Add values to the graph
$graphValues=array(0,80,23,11,190,245,50,80,111,24 0,55);
// Define .PNG image
header("Content-type: image/png");
$imgWidth=250;
$imgHeight=250;
// Create image and define colors
$image=imagecreate($imgWidth, $imgHeight);
$colorWhite=imagecolorallocate($image, 255, 255, 255);
$colorGrey=imagecolorallocate($image, 192, 192, 192);
$colorBlue=imagecolorallocate($image, 0, 0, 255);
// Create border around image
imageline($image, 0, 0, 0, 250, $colorGrey);
imageline($image, 0, 0, 250, 0, $colorGrey);
imageline($image, 249, 0, 249, 249, $colorGrey);
imageline($image, 0, 249, 249, 249, $colorGrey);
// Create grid
for ($i=1; $i<11; $i++){
imageline($image, $i*25, 0, $i*25, 250, $colorGrey);
imageline($image, 0, $i*25, 250, $i*25, $colorGrey);
}
// Create line graph
for ($i=0; $i<10; $i++){
imageline($image, $i*25, (250-$graphValues[$i]), ($i+1)*25, (250 - $graphValues[$i+1]), $colorBlue);
}
// Output graph and clear image from memory
imagepng($image);
imagedestroy($image);
?>
Linear Mode
