How to Develop Web Crawlers in PHP
I have developed a simple website using PHP, HTML and Mysql. What I need to do now is to develop a software that will search the web for specific information and use this to update my webpage. I have learned that web crawlers are candidates to achieve that. I would like some steps needed to develop a simple web crawler to help me achieve my objective. Can I get some to buy and later modify them? How do you modify a web crawler?