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PHP GD random bar chart on image

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This example shows how to add random bar chart on image in php gd.

<?php

Header( "Content-type: image/jpeg");

$im = imagecreatefromjpeg( "images.jpg");

$red=ImageColorAllocate($im,255,0,0);

$green=ImageColorAllocate($im,0,255,0);

$blue=ImageColorAllocate($im,0,0,255);

$yellow=ImageColorAllocate($im,255,255,0);

$cyan=ImageColorAllocate($im,0,255,255);

$x=imagesx($im);

$y=imagesy($im);

srand(mktime());

$v=rand(); $v=$v/32768*200;

ImageFilledRectangle($im,10,200-$v,60,200,$red);

$v=rand(); $v=$v/32768*200;

ImageFilledRectangle($im,70,200-$v,120,200,$green);

$v=rand(); $v=$v/32768*200;

ImageFilledRectangle($im,130,200-$v,180,200,$blue);

$v=rand(); $v=$v/32768*200;

ImageFilledRectangle($im,190,200-$v,240,200,$yellow);

$v=rand(); $v=$v/32768*200;

ImageFilledRectangle($im,250,200-$v,300,200,$cyan);

Imagejpeg($im);

ImageDestroy($im);

?>

After running the program you will get the following output

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Posted on: November 11, 2009 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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