php preg_match_all get second select box options

Question

I am applying preg_match_all on a webpage select box that i get from file_get_contents but the problem is that it is only getting first select box and is not able to get second select box and it's options. My code is

 $html = file_get_contents("https://www.amazon.co.jp/-/en/dp/B09C1PM7K3?th=1");
 $quantityMatch  = preg_match_all( '@(<option value="([^"]+)">([^<]+)</option>)@', $html, $quantity);

    $result = array();
    $k = 0;
    foreach ($quantity[0] as $i => $value){
        $result[$quantity[2][$i]] = $quantity[3][$i];
        $k = $i;
    }
    $finalQty = $quantity[3][$k];
    // print_r($result);
    dd($finalQty);

it is getting categories from this page but i need second select box that is the quantity of stock on the webpage.

Answer 1

You can see the data of the selected option with this link. unselected if you search with a phrase like "<li"

<li ... data-dp-url="/dp/B09C1P6T71/ref=twister_B09GWCBGQ5?_encoding=UTF8&psc=1"

you can get data-dp-url for unselected option and you add your link etc: https://www.amazon.co.jp/-/en/ and again file get content new url that's your new option stock :)

Example: your new second option link:

https://www.amazon.co.jp/-/en/dp/B09C1Q11Z9/ref=twister_B09GWCBGQ5?_encoding=UTF8&psc=1

If you don't understand, I can write sample code and post it.

Red: unselected option Black: selected option

For example second option product stock count:

$html = file_get_contents("https://www.amazon.co.jp/-/en/dp/B09C1PM7K3?th=1");
    $qq = preg_match_all( '@(data-dp-url="([^<]+)" )@', $html, $option);
    $link = "https://www.amazon.co.jp/-/en".str_replace("&amp;", '&', explode('"', $option[0][1])[1]);
    $html_new_option = file_get_contents($link);
    $quantityMatch  = preg_match_all( '@(<option value="([^"]+)">([^<]+)</option>)@', $html_new_option, $quantity);

    $result = array();
    $k = 0;
    foreach ($quantity[0] as $i => $value){
        $result[$quantity[2][$i]] = $quantity[3][$i];
        $k = $i;
    }
    $finalQty = $quantity[3][$k];
    dd($finalQty);

=> $option[0][WANT_OPTION_ORDER]