使用php从url中抓取图像

Question

i am trying to make a page that allows me to grab and save images from another link , so here's what i want to add on my page:

1. text box (to enter url that i want to get images from).
2. save dialog box to specify the path to save images.

but what i am trying to do here i want to save images only from that url and from inside specific element.

for example on my code i say go to example.com and from inside of element class="images" grab all images.

notes: not all images from the page, just from inside the element whether element has 3 images in it or 50 or 100 i don't care.

here's what i tried and worked using php

<?php
$html = file_get_contents('http://www.tgo-tv.net');
preg_match_all( '|<img.*?src=[\'"](.*?)[\'"].*?>|i',$html, $matches ); 
echo $matches[ 1 ][ 0 ];
?>

this gets image name and path but what i am trying to make is a save dialog box and the code must save image directly into that path instead of echo it out

hope you understand

Edit 2

it's ok of Not having save dialog box. i must specify save path from the code

Answer 1

If you want something generic, you can use:

<?php
    $the_site = "http://somesite.com";
    $the_tag = "div"; #
    $the_class = "images";

    $html = file_get_contents($the_site);
    libxml_use_internal_errors(true);
    $dom = new DOMDocument();
    $dom->loadHTML($html);
    $xpath = new DOMXPath($dom);

    foreach ($xpath->query('//'.$the_tag.'[contains(@class,"'.$the_class.'")]/img') as $item) {

        $img_src =  $item->getAttribute('src');
        print $img_src."
";

    }

---

Usage:

Change the site, tag, which can be a div, span, a, etc. also change the class name.

For example, change the values to:

$the_site = "https://stackoverflow.com/questions/23674744/what-is-the-equivalent-of-python-any-and-all-functions-in-javascript";
$the_tag = "div"; #
$the_class = "gravatar-wrapper-32";

---

Output:

https://www.gravatar.com/avatar/67d8ca039ee1ffd5c6db0d29aeb4b168?s=32&d=identicon&r=PG
https://www.gravatar.com/avatar/24da669dda96b6f17a802bdb7f6d429f?s=32&d=identicon&r=PG
https://www.gravatar.com/avatar/24780fb6df85a943c7aea0402c843737?s=32&d=identicon&r=PG