This is an article i wrote for sitepoint.com.
Below is an excerpt form and link to the full article. You will definitely love it.
A photographer friend of mine implored me to find and download images of picture frames from the internet. I eventually landed on a web page that had a number of them available for free but there was a problem: a link to download all the images together wasn’t present.
I didn’t want to go through the stress of downloading the images individually, so I wrote this PHP class to find, download and zip all images found on the website.
Link to the article => Image Scraping with Symfony’s DomCrawler.