PHPSimplex is an online tool to solve linear programming problems. It can be used for free. In order to use it, just click on the left icon or on «PHPSimplex» in the top menu.
PHPSimplex is able to solve problems using the Simplex method, the Two-Phase Simplex method and the Graphical method algorithms, and it does not have limits in the number of decision variables nor in the constraints of the problems.
This tool is designed to help students in their learning as it not only shows the final results but also the intermediate operations step by step. Also it offers direct solution for use by professionals. Others of its advantages are that it does not need any specific language to enunciate the problem, offers a friendly interface, is closer to the user, easy and intuitive handling, it is not necessary to install any program to use it, and it will be available in several languages (if you want PHPSimplex in your language, please contact with us).
Help of PHPSimplex to learn quickly how to use the tool is also available.
Besides, in this page can be found theory of used methods, special cases to consider, examples solved step by step, comparison among the Simplex method and the Graphical method, Operations Research's history, etc.