php替换字符串并读取完整字符串

Question

i am trying to achieve this. I have alot of HTMLs that looks somethinglike this (for example).

<div>
    <img src="http://firstsite.com/path/to/img/main.jpg" style="width: 500px; height: 400px;" />
</div>

Now i try to make a php that automatically changes the path of the images to another website, but i also want to download the images and put them into same folder structure. So far i did this:

    $input = "c:/wamp/www/primo/input12";
    $output = "c:/wamp/www/primo/output12";


    $handle  = opendir($input);
    while (($file = readdir($handle)) !== false) {
        if($file != '.' && $file != '..') {

            $data = file_get_contents($input . "/" . $file);

            $data = str_replace("http://firstsite.com/", "http://secondsite.com", $data);

            file_put_contents($output . "/" . $file, $data);

        }
    }
    closedir($handle);

This changes the path but now i need to somehow get into a variable the full path http://firstsite.com/path/to/img/main.jpg in my example in order to download the image.

Is there a way to get the full path of the images while replacing http://firstsite.com/ which is just the begining of the path ?

Thank you in advance, Daniel!

Answer 1

Get only images:

$data = file_get_contents($input . "/" . $file);

preg_match_all('/\<img.*src=\"(.+?)\"/s', $data, $matches);
//go through the match array and download your files

$data = str_replace("http://firstsite.com/", "http://secondsite.com", $data);
file_put_contents($output . "/" . $file, $data);

Get all pathes:

$data = file_get_contents($input . "/" . $file);

preg_match_all('/http\:\/\/firstsite\.com([^\s]+?)/s', $data, $matches);
//go through the match array and download your files

$data = str_replace("http://firstsite.com/", "http://secondsite.com", $data);
file_put_contents($output . "/" . $file, $data);