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form security and validation – Classes???

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Mar 16.2006

? Hello all,

I am looking for a little input here on form security and validation.

I am working on my first PHP/MySQL site with a LOT of forms of one type or another and as about 90% of them feed back to the database. So I have two questions I hope you can help me out on…

can I use a class (I’ve never used one before) to do most of the work? i.e.
strip_tags()
strip_slashes()
allow only [A-Z], [a-z], [0-9]
[- _ @ : ; , .]
and anything else you can think of to make forms more secure???

Secondly can I do something similar, maybe including javascript to validate required fields?

Many thanks

Mouse

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PHP

7 Comments(s) ↴

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@LiLcRaZyFuZzYMar 16.2006 — You would probably want to have a database interaction class, which you could then extend to a form processing class in which you would add the validation methods

you would then call it with something like

[code=php]
$validate = $form_processing->validate($_POST['field'], $type);[/code]
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@Mouse77eauthorMar 16.2006 — You would probably want to have a database interaction class, which you could then extend to a form processing class in which you would add the validation methods

you would then call it with something like

[code=php]
$validate = $form_processing->validate($_POST['field'], $type);[/code][/QUOTE]

Sorry i should have mentioned... i am new to classes... in fact as i write this i am looking for tutorials on the subject... but thanks for the input all the same ?

Mouse
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@LiLcRaZyFuZzYMar 16.2006 — Read the "language reference" part in the manual (classes and objects php4/5)
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@NogDogMar 16.2006 — If you've not worked with object-oriented programming before, the PHP manual won't really explain why and when to use classes and objects, just the syntax. You might therefore want to start by learning some of the basics of O-O. Here's one general tutorial I found: http://java.sun.com/docs/books/tutorial/java/concepts/index.html
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@LiLcRaZyFuZzYMar 16.2006 — Zend.com has a couple of interesting articles and tutorials about OOP

edit: i think..
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@schizoMar 16.2006 — Once you have basic OOP knowlege, take a look at http://www.phpbuilder.com/columns/weiner20050831.php3

It's an article that I wrote last year on Object-Oriented form validation.
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