如何搜索我自己的网站?

I want to search my own website. When I enter the key word in the search box, I want results to show on the 'searchResult.html' page. I want the key word to be highlighted, so when I click the key word, I want to move to that page.

I searched here, but I still don't get it. How can I make this possible? Do I have to use php and mysql or only javascript ? Please advise me. Thanks.

If you want something fast and do not know how to do, you can use Google Custom Search