function buildChilds() { $indiv = new individual(); for ($i = 1; $i <= $this->population; $i++) { $g_value = $this->mutate($this->arr_individual[$i]->gene_value); $f_value = $this->fitness($g_value); $indiv->set($g_value, $f_value, $this->date); $this->arr_offspring[$i] = $indiv; $this->date++; } $this->currentGeneration++; }