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Development of Web Applications – Introduction revisited

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Presentation on theme: "Development of Web Applications – Introduction revisited"— Presentation transcript:

1 Development of Web Applications – Introduction revisited
Jouni Juntunen Seniour Lecturer Oulu University of Applied Sciences School of Business and Information Management

2 Contents Web-applications How Internet and web-applications work
HTML-forms HTTP (HyperText Transfer Protocol) Introduction to PHP

3 Web-applications What (dynamic) web-applications you have used?
Examples:

4 Client-Server model Internet Server (e. g. oamk.fi) Browser
HTTP-Request HTTP-Reply (X)HTML processed by the server (X)HTML presented by the browser

5 (X)HTML Hypertext Markup –language Is used to implement user-interface
You write tags and the browser knows how to interpret them HTML-language (original) spesification can be found from Example

6 (X)HTML-forms TextFields Lists Buttons Etc. Nested into form
Form can be submitted to server Example

7 HTTP Hypertext Transfer protocol
The way browser and web-server are talking to each other Browser requests the service and server answers to that Connection is closed after server reply Understanding HTTP on Tool for viewing HTTP-traffic

8 PHP PHP Hypertext Preprocessor
PHP is one of the web-server techologies PHP-language has features from C and Perl –languages (but is also looks like Java, because Java is also founded from C/C++)

9 PHP Script is written between: <? ?> -tags <php? ?> -tags
<script language=”php”> </script> <html> <head><title></title></head> <body> <? print ”This is an example!”; ?> </body> </html>

10 Using PHP in applications
HTML-form PHP-script


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