Grab images from a website and automatically download them to a folder

. . . . Because a certain website is a bit tricky to view pictures, and you have to turn page after page. . . . so. . . . I just wrote something like this
(I am a product, not a programmer). The running speed is simply unbearable, and errors often occur, so I hope everyone can help improve it (PHP). . .
Of course, you are also welcome to see the PYTHON and GOLANG versions~~^_^
By the way, the program is based on CodeIgniter
. . . . Click links carefully

$this->load->helper('date');
$this->load->helper('phpQuery');
//I put the phpQuery single file into the helper

//- - Just to quickly produce products, so please ignore the variable names when writing code directly in VIEW. . .
$imageslist = phpQuery::newDocumentFile('http://g.e-hentai.org/g/xxxxx/xxxxxxx/');//Homepage
$pn = 1;//Number of pages
$ps = $imageslist->find('.ptt td a');//Get the page navigation from the homepage
//Get the page content starting from the page navigation
foreach($ps as $p)
{
 echo 'th'. $pn++.'Page:';
 echo '';