gVennDiagram.php

<?php
namespace gchart;
class gVennDiagram extends gChart
{

    private $sizes;
    private $intersections;
    private $numData;

    function __construct($width = 200, $height = 200)
    {
        $this->setProperty('cht', 'v');
        $this->setDimensions($width, $height);
        $this->sizes = array(0,0,0);
        $this->intersections = array(0,0,0,0);
        $this->numData = 2;
    }
    public function setSizes($A=0, $B=0, $C=0)
    {
        if ($C)
            $this->numData = 3;
        $this->sizes = array($A, $B, $C);
    }
    public function setIntersections($AB=0, $AC=0, $BC=0, $ABC=0)
    {
        $this->intersections = array($AB, $AC, $BC, $ABC);
    }
    public function setDataSetString()
    {
        $fullDataSet = array_merge($this->sizes, $this->intersections);
        $this->setProperty('chd', $this->getEncodingType().":".$this->encodeData($fullDataSet, ',', $this->getEncodingType()));
    }
    public function getApplicableLabels($labels)
    {
        return array_splice($labels, 0, $this->numData);
    }
}