Showing graphs with php from Mysql tables - php

Question

How can I show the statistics of data stored in a MySQL table dynamically with PHP image functions? I am able to show the counts in form of bar charts using count query on static tables but as shown in Image given. I have database that stores the logs of server dynamically.
The image is generated from 3 tables and image & draw functions of php

Answer 1

I dont know how you are trying. But there is a nice Jquery plugin called Highcharts. You can use this to create various types of graphs. Please refer the below link if you are interested
http://www.highcharts.com/

Answer 2

Rgraph is also a very nice HTML5/Javascript Graph library, easy to use and with lots of options.
http://www.rgraph.net/
var data = ['<?php echo implode("','", $average); ?>'];
function drawGraph(){
RGraph.Clear(document.getElementById('myRadar'));
var radar = new RGraph.Radar('myRadar', data);
This is how you can add a PHP array, $average is the array with the numbers, it's a radar chart in this example. The implode function puts a comma between the values of the array.

Answer 3

I have used the following code create a simple bar chart with php.
You have to get the bar value from database and put it in $data array.
Next have to set the $height and $width for image size.
Based on your image size, you have to position the chat.
<?php
$data = array('400', '2570', '245', '473', '1000', '3456', '780', '5000', '30', '420');
$sum = array_sum($data);
$height = 480;
$width = 640;
$im = imagecreate($width, $height);
$background = imagecolorallocate($im, 255, 255, 255);
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
$red = imagecolorallocate($im, 255, 0, 0);
$green = imagecolorallocate($im, 51, 153, 0);
$yellow = imagecolorallocate($im, 255, 255, 0);
imageline($im, 10, 5, 10, $height - 20, $black);
imageline($im, 10, $height - 20, 620, $height - 20, $black);
header("Content-type: image/png");
$x = 11;
$y = 459;
$x_width = 20;
$y_ht = 0;
$max_i = count($data);
for ($i = 0; $i < $max_i; $i++) {
$y_ht = ($data[$i] / $sum) * $height;
if ($data[$i] > 1000) {
imagefilledrectangle($im, $x, $y, $x + $x_width, ($y - $y_ht), $green);
} else if ($data[$i] > 500) {
imagefilledrectangle($im, $x, $y, $x + $x_width, ($y - $y_ht), $yellow);
} else {
imagefilledrectangle($im, $x, $y, $x + $x_width, ($y - $y_ht), $red);
}
imagestring($im, 2, $x - 1, ($y - $y_ht - 15), $data[$i], $black);
$x += ($x_width + 2);
}
imagepng($im);
imagedestroy($im);
?>
ref: http://www.talkphp.com/advanced-php-programming/1629-bar-chart-php.html