Try using backslash (\) before #.
Thanks & Regards
Udayakumar Sarangapani
Sr. PHP Developer
CompIndia Infotech Pvt. Ltd.
Chennai.
"Science is nothing but logic..."
----- Original Message ----
From: Sudhakar <finals27@xxxxxxxxx>
To: php-objects@xxxxxxxxxxxxxxx
Sent: Monday, 26 May, 2008 1:20:41 PM
Subject: validating username
i have used the following code to validate the username it is working fine
============ ========= ========= ========= ======
if( $username == "" || !preg_match( "/^[a-z0- 9]+(?:_[a- z0-9]+)?$ /i",
$username) )
{
$error.="User name cannot be blank or has special characters";
}
============ ========= ========= ========= ======
it does not accept UNDERSCORE at the beginning or end however while i
was testing with different special characters except for # the
validation works fine for all other special characters.
for example if i enter the user name as = abc#123
in this case # sign and what comes after # sign is being ignored. so
in this case the username is being read as abc ONLY and not abc#123
this is very strange, how can i still validate # sign and tell the
user that # sign is not a valid username like i have been doing with
any other special characters like = !@$......... ..
please advice.
thanks.
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