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Published byBaldwin Nelson Modified over 6 years ago
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Development of Web Applications – Introduction revisited
Jouni Juntunen Seniour Lecturer Oulu University of Applied Sciences School of Business and Information Management
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Contents Web-applications How Internet and web-applications work
HTML-forms HTTP (HyperText Transfer Protocol) Introduction to PHP
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Web-applications What (dynamic) web-applications you have used?
Examples:
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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
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(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
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(X)HTML-forms TextFields Lists Buttons Etc. Nested into form
Form can be submitted to server Example
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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
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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++)
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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>
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Using PHP in applications
HTML-form PHP-script
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