form validation in php

[feelseez]

Pls, is there are any i could validate the input into a form , say user should only enter numerals rather that string xters from PHP

[mark_W]

You can use is_numeric (http://uk.php.net/is_numeric) to check if a value is numeric or not. For more complicated form validation, I.e checking a valid email address you would probably do so using regular expressions.

[RRWH]

start with http://php.net/manual/en/function.is-numeric.php and go from there....

[Kailash Badu]

To get ease yourself from all the pain involved in form validation, use QuickForm package of PEAR. Yes, it might be a bit difficult to grasp to begin with, but as you do it for sometime it’s breeze.

[mark_W]

To get ease yourself from all the pain involved in form validation, use QuickForm package of PEAR. Yes, it might be a bit difficult to grasp to begin with, but as you do it for sometime it’s breeze.

Until you come to a situation where you cant use Pear, then all of a sudden you dont know how to validate input. For someone, who is obviously fairly new to PHP it would be more beneficial to learn how to validate input alone.

[Kailash Badu]

Until you come to a situation where you cant use Pear, then all of a sudden you dont know how to validate input

It hardly happens, I suppose. Even when you use Pear, you easily know how exactly the validation is working. All the rules are written under Rule class, which simple uses general preg_match() against different regex values. In case you don’t have pear, you can easily rewrite those function inside your own form validation page. I have found it easier then I expected.