11-17-2005
Perl Regular Expression - Whitelist
I am creating a whitelist for User Input Validation. Here is a code snippet that allows alphanumeric and forward slash (/).
if ( $variable =~ /^[a-zA-Z0-9\/]*$/ ) #allow alphanumeric and fwd slash
{
$returnValue = 'good data';
}
else
{
$returnValue = 'Bad Data';
}
The problem that I am having is that when I pass a value such as
FWD/RWD, the code returns the value 'Bad Data'. What am I doing wrong? Why doesn't the variable recognize the forward slash in the regular expression?
Thanks in advance for your help.
Dave
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