php gd bar graph
This example shows how to create Bar Graph in php gd.
This example shows how to create Bar Graph in php gd.<?php
$data = array('3000','2470','225','663','6666','3456','789');
$sum = array_sum($data);
$height = 255;
$width = 320;
$im = imagecreate($width,$height);
$white = imagecolorallocate($im,255,255,255);
$black = imagecolorallocate($im,0,0,0);
$red = imagecolorallocate($im,255,0,0);
imageline($im, 10, 5, 10, 230, $black);
imageline($im, 10, 230, 300, 230, $black);
$x = 15;
$y = 230;
$x_width = 20;
$y_ht = 0;
for ($i=0;$i<7;$i++){
$y_ht = ($data[$i]/$sum)* $height;
imagerectangle($im,$x,$y,$x+$x_width,($y-$y_ht),$red);
imagestring( $im,2,$x-1,$y+10,$data[$i],$black);
$x += ($x_width+20);
}
imagejpeg($im);
header("Content-type: image/jpeg");
?>
After running the program you will get the following output
