Training, Open Source Computer Languages

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PHP module H303
Long and short term cookies and security
Exercises, examples and other material relating to training module H303. This topic is presented on public course PHP Techniques




Articles and tips on this subjectupdated
3813Injection Attacks - PHP, SQL, HTML, Javascript - and how to neutralise them
A delegate for tomorrow's PHP Techniques Course arrived early, and I've spent this afternoon taking a look at the fundamentals of what an "injection attack" is, and how to render attempts to attack your server using such methods harmless. When you have a web application running, you'll be providing ...
2012-08-11
 
3698How to stop forms on other sites submitting to your scripts
From time to time, many of us web site authors and maintainers put a form on our site which submits data to another site. It might be something as simple as a Google seach box or a webmail login page. If you're developing a page / form which you do not want to be filled in remotely in this way, you ...
2012-04-21
 
2238Handling nasty characters - Perl, PHP, Python, Tcl, Lua
Are your writing or maintaining a web based application that uses forms? If so, you have better be aware of some of the nasty characters that are around! The < character, when echoed back from a users's input 'unchallenged', may form the start of a tag. So that in a relatively benign case, a user ...
2009-06-21
 
1911Remember Me - PHP
Here's a paradox for you as a web site designer, when putting together a web site which requires a login. Most of your users are regulars, who really don't want the hassle of logging in every time they visit ... but at the same time, you can't allow blanket, long term logins as your site is often accessed ...
2008-12-01
 
1646Using cookies and sessions to connect different URLs - PHP
One of the great beauties of cookies (and derived from that, of PHP sessions) is that they can be used across a series of pages on the same server - indeed we use cookies on this site to record our visitor's preferences for colour, font size, country and open source langauge(s) via our user preference ...
2008-05-19
 
Examples from our training material
codo.php   Memorising via a cookie
ss2.php   Session - logging time and remembering inputs
suggest.php   Cookie and clean form demo
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from http://www.training-notes.co.uk.
Topics covered in this module
Welcoming your user back.
Keeping sessions apart - a multiuser application.
Avoiding double ordering - the back button issue.
Sign on, single sign on.
Legal issues.
Credit Card - gathering and processing.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

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We have a technical library of over 700 books on the subjects on which we teach. These books are available for reference at our training centre. Also available is the Opentalk Forum for discussion of technical questions.


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