PHP Gantt Chart Class

If you are not interested in a full-fledged online project management software, but looking for a simple program to generate Gantt charts, then check out our Gantt chart class written in PHP. This is the same component that we use in Kiwi Manager and we have decided to release it under the GNU General Public License.

The code supports both PHP4 and PHP5 and requires the PHP GD library to output charts in JPG format. To download this class, please go to the project website located at sourceforge.net.

An example script is illustrated below. To see the expected gantt chart, please click here.

<?php

require_once "BURAK_Gantt.class.php";

$g = new BURAK_Gantt();
// set grid type
$g->setGrid(1);
// set Gantt colors
$g->setColor("group","000000");
$g->setColor("progress","660000");
// add holidays
$g->addHoliday("2006-12-09");
// add groups
$g->addGroup("G1","Group 1");
$g->addGroup("G2","Group 2","G1");
$g->addGroup("G3","Group 3","G2");
$g->addGroup("G4","Group 3","G3");
// add tasks
$g->addTask("A","2006-12-02","2006-12-05",100,"Task A","G1");
$g->addTask("B","2006-12-06","2006-12-08",100,"Task B","G1");
$g->addTask("C","2006-12-09","2006-12-12",100,"Task C","G2");
$g->addTask("D","2006-12-13","2006-12-14",100,"Task D","G2");
$g->addTask("E","2006-12-15","2007-01-22",1,"Task E","G1");
$g->addTask("F","2006-12-13","2006-12-19",30,"Task F");
$g->addTask("G","2006-12-11","2006-12-19",40,"Task G");
// add milestones
$g->addMilestone("M1","2006-12-15","Milestone 1","G2");
$g->addMilestone("M2","2007-01-23","Milestone 2");
// add relations
// add end-to-start relations
$g->addRelation("A","B","ES");
$g->addRelation("B","C","ES");
$g->addRelation("C","D","ES");
$g->addRelation("M1","E","ES");
$g->addRelation("D","M1","ES");
$g->addRelation("E","M2","ES");
// add start-to-start relation
$g->addRelation("D","F","SS");
// add end-to-end relation
$g->addRelation("F","G","EE");
// ouptput Gantt image
$g->outputGantt();

?>