// using Composer
require_once __DIR__ . '/vendor/autoload.php';

// using manual download
require_once __DIR__ . '/Simplex/simplex.php';

// define task: Maximize x1 + 2x2
$task = new Simplex\Task(new Simplex\Func(array(
	'x1' => 1,
	'x2' => 2,
)));

// add constraints

// 3x1 + 2x2 <= 24
$task->addRestriction(new Simplex\Restriction(array(
	'x1' => 3,
	'x2' => 2,

), Simplex\Restriction::TYPE_LOE, 24));

// -2x1 - 4x2 >= -32
$task->addRestriction(new Simplex\Restriction(array(
	'x1' => -2,
	'x2' => -4,

), Simplex\Restriction::TYPE_GOE, -32));

// create solver
$solver = new Simplex\Solver($task);

// get solutions
$solution = $solver->getSolution(); // array('x1' => 0, 'x2' => 8, 'x3' => 8, 'x4' => 0)
$alternativeSolutions = $solver->getAlternativeSolution(); // array(array('x1' => 4, 'x2' => 6, 'x3' => 0, 'x4' => 0))

// get optimal value
$optimum = $solver->getSolutionValue($solution); // 16

// print solutions
$printer = new Simplex\Printer;
$printer->printSolution($solver);

// or print the whole solution process
$printer->printSolver($solver);

$solver = new Simplex\Solver($task, 32);