Robot : webcrawler + parser

We are a team of engeneers, specialized in SEO consulting. We want you to code us **a script that will crawl specific pages**, among a selection of sites, and that will then **report us needed informations**. ## Deliverables ***** The script will have 3 main tasks : ** 1. Check the presence of backlinks on specific pages ==> *we give the url that needs to be checked on a specific page, then the script tells us if the backlink is still on that page.* 2. Positionning reports on specific pages ==> *we give the url which position needs to be checked on specific toplists, then the script tells us the site’s rank on that page.* 3. Ping servers ==> *in order to check if specific servers are still available, and alert us if there is any downtime * ***** Precision about the project : ** * the script will pass through proxys. We will provide the list of proxys that need to be used. * Pages to crawl and others "missions" data are already in DB tables. No interface is needed. * Script will be launched by crontab and will perform checks daily * Reports are put into a DB table, alerts are sent by mail ***** Platform : ** Programming language: PHP (also accepted : Python / Perl ) Database : MySQL Server OS: Linux