regular expressions in php

ALInux · 11-06-2005, 02:31 PM

Hi I need an regular expression that I can use with preg_match() ...I want it to return true if argument is an alphanumeric and false otherwise.

What is the purpose of the statement beneath?
$x = preg_match ("/[A-z]+[0-9]+/", $password)

keefaz · 11-06-2005, 02:41 PM

Try :

PHP Code:


			
$x = preg_match("/^[A-z-0-9]+$/", $password);

^ : begin of text
[A-z-0-9] : any letter from A to z, any number from 0 to 9
+ : one or more time
$ : end of text

ALInux · 11-07-2005, 02:21 AM

Does the "+ : one or more time" guarantee that there is at least one number and one letter ??

keefaz · 11-07-2005, 05:28 AM

That guarantees that there is at least one number OR one letter

You could use strlen() if you want to test the password contain a minimal
number of character before the preg_match()

ALInux · 11-07-2005, 11:48 AM

thank you for your continous support....I think Iam not explaining what I want in the right way.

I want at least one number AND at least one character.

Thanks again it is people like you who make this site so succesfull