Beispiel #1
0
 /**
  * Create a new Vertex
  *
  * @param Graph      $graph graph to be added to
  * @param string|int $id    identifier used to uniquely identify this vertex in the graph
  * @see Graph::createVertex() to create new vertices
  */
 public function __construct(Graph $graph, $id)
 {
     if (!is_int($id) && !is_string($id)) {
         throw new InvalidArgumentException('Vertex ID has to be of type integer or string');
     }
     $this->id = $id;
     $this->graph = $graph;
     $graph->addVertex($this);
 }