html,css,javascript,php "Role" in the structure of the website

①html used in the structure of the website to display the content of the Web page;

②css used in the structure of the website, beautify the page, such as font color size;

③javascript (JS) in the site structure to use, so that the page to move, improve the browsing experience;

④php scripts run on the server side to interact with the database to get data (generate dynamic pages).

PHP through will no longer be limited to output HTML, you can output images, pdf,flash, etc.;

PHP runs on the server and then returns the plain HTML results to the browser.

html,css,javascript,php "Role" in the structure of the website