Pop\Pdf\Pdf::deletePage PHP Method

    public function deletePage($pg)
    {
        $key = $pg - 1;
        // Check if the page exists.
        if (!array_key_exists($key, $this->pages)) {
            throw new Exception('Error: That page does not exist.');
        }
        // Determine the page index and related data.
        $pi = $this->pages[$key];
        $ki = array_search($pi, $this->objects[$this->parent]->kids);
        $content_objs = $this->objects[$pi]->content;
        // Remove the page's content objects.
        if (count($content_objs) != 0) {
            foreach ($content_objs as $value) {
                unset($this->objects[$value]);
            }
        }
        // Subtract the page from the parent's count property.
        $this->objects[$this->parent]->count -= 1;
        // Remove the page from the kids and pages arrays, and remove the page object.
        unset($this->objects[$this->parent]->kids[$ki]);
        unset($this->pages[$key]);
        unset($this->objects[$pi]);
        // Reset the kids array.
        $tmpAry = $this->objects[$this->parent]->kids;
        $this->objects[$this->parent]->kids = array();
        foreach ($tmpAry as $value) {
            $this->objects[$this->parent]->kids[] = $value;
        }
        // Reset the pages array.
        $tmpAry = $this->pages;
        $this->pages = array();
        foreach ($tmpAry as $value) {
            $this->pages[] = $value;
        }
        return $this;
    }