253671 custom crawler

We need a crawler developed in php with a front end, it will take a url or keyword given and search that keyword or url using google, and yahoo or only one whichever is chosen from the form it must save any website which has that keyword or url in it's body, the information must be stored in a database. The script must be able to use advanced search queries like quots brackets + etc. So if a search for "Company ABC Inc" is searched it will find that exact phrase in the search and any websites with that phrase will be saved to the database.