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Week one presentation principles of web server scripting

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This document discusses web server scripting, including what it is, its principles, and three common languages - PHP, ASP.Net, and Java Server Pages. Web server scripting involves server-side processing of requests from clients to dynamically generate and send HTML pages. It allows for features like security, database integration, and cookie/session management. The languages differ in things like open source vs proprietary, ease of use, and platform support.

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Web Server Scripting  What is Web Server Scripting?  What are the principles of WSS?  What are three different WSS languages?
Web Server Scripting Your PC (Client) Hosting Server (Web Server) Requests HTML Pages Sends HTML Pages
Web Server Scripting Your PC (Client) Hosting Server (Web Server) Requests HTML Pages Sends HTML Pages Client Side Processing: CSS, JavaScript Server Side Processing: PHP – puts pages together
Web Server Scripting e.g. Amazon.co.uk: You click on a link requesting a product. The PHP template is found: Amazon Logo Your Account information Product Information from Database
Web Server Scripting This is turned into a HTML document and sent to your PC. There may be CSS commands and JS in the document: this is processed by YOUR computer. Amazon Logo Your Account information Product Information from Database
Web Server Scripting Server Side vs Client Side Client Side – Executed on the host computer i.e. PC Client Side– Danger of malicious attacks Client Side– uses host PC resources Client Side– Code is viewable
Web Server Scripting Server Side vs Client Side Server Side – Executed on the Server Server Side – Less danger of attack on the host PC Server Side – Uses Server resources Server Side – Code is hidden
Web Server Scripting Three Different Web Server Scripting Languages: PHP ASP.Net Java Server Pages
Web Server Scripting PHP – PHP HyperText PreProcessor Web pages are generated by PHP code. Open Source and cross platform Easy to link to database platforms such as MySQL Relatively easy to use
Web Server Scripting JSP – Java Server Pages Run Java Code More complex language Uses JSP compiler
Web Server Scripting ASP.Net Simple to use Contains built in controls Quick to execute Specific to Windows Costs money for licence and to implement.
Web Server Scripting - Features In general – Features which are advantages of Server Side are: Increased security of code Ease of use and integration No need for CGI (Common Gateway Interface) Multi Platform Multi Language In general – disadvantages of Server Side are: Greater complexity of creating websites Reduced performance where scripts are interpreted
Web Server Scripting - Functions What do we use Server Side for? Functions of Server Side Languages include: Create / Use Cookies and Session Management Security and Log In Procedures Web Content Management Administration Logfile Analysis Upload and Download of files
Web Server Scripting - Accessibility Accessibility – How can PHP help people with impairments to access websites? Can redirect to alternative text versions Support for resizable fonts Support for Text Readers Support for user adjustable fonts (often done with support of CSS).

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Week one presentation principles of web server scripting

  • 1. Web Server Scripting  What is Web Server Scripting?  What are the principles of WSS?  What are three different WSS languages?
  • 2. Web Server Scripting Your PC (Client) Hosting Server (Web Server) Requests HTML Pages Sends HTML Pages
  • 3. Web Server Scripting Your PC (Client) Hosting Server (Web Server) Requests HTML Pages Sends HTML Pages Client Side Processing: CSS, JavaScript Server Side Processing: PHP – puts pages together
  • 4. Web Server Scripting e.g. Amazon.co.uk: You click on a link requesting a product. The PHP template is found: Amazon Logo Your Account information Product Information from Database
  • 5. Web Server Scripting This is turned into a HTML document and sent to your PC. There may be CSS commands and JS in the document: this is processed by YOUR computer. Amazon Logo Your Account information Product Information from Database
  • 6. Web Server Scripting Server Side vs Client Side Client Side – Executed on the host computer i.e. PC Client Side– Danger of malicious attacks Client Side– uses host PC resources Client Side– Code is viewable
  • 7. Web Server Scripting Server Side vs Client Side Server Side – Executed on the Server Server Side – Less danger of attack on the host PC Server Side – Uses Server resources Server Side – Code is hidden
  • 8. Web Server Scripting Three Different Web Server Scripting Languages: PHP ASP.Net Java Server Pages
  • 9. Web Server Scripting PHP – PHP HyperText PreProcessor Web pages are generated by PHP code. Open Source and cross platform Easy to link to database platforms such as MySQL Relatively easy to use
  • 10. Web Server Scripting JSP – Java Server Pages Run Java Code More complex language Uses JSP compiler
  • 11. Web Server Scripting ASP.Net Simple to use Contains built in controls Quick to execute Specific to Windows Costs money for licence and to implement.
  • 12. Web Server Scripting - Features In general – Features which are advantages of Server Side are: Increased security of code Ease of use and integration No need for CGI (Common Gateway Interface) Multi Platform Multi Language In general – disadvantages of Server Side are: Greater complexity of creating websites Reduced performance where scripts are interpreted
  • 13. Web Server Scripting - Functions What do we use Server Side for? Functions of Server Side Languages include: Create / Use Cookies and Session Management Security and Log In Procedures Web Content Management Administration Logfile Analysis Upload and Download of files
  • 14. Web Server Scripting - Accessibility Accessibility – How can PHP help people with impairments to access websites? Can redirect to alternative text versions Support for resizable fonts Support for Text Readers Support for user adjustable fonts (often done with support of CSS).