Acceptable characters are a-zA-Z0-9 and ; in php regex how can I do this?

[dagam3rz]

Here is the scenario: I'm filtering the data being submitted by the user. Acceptable characters are a-zA-Z0-9 and semicolon(;) in php regex how can I do this?

Semicolon(;) serve as delimiter, so I'll be splitting the string into an array.

Please help.

Tenx!

[dlite922]

You basically did it. your class is [a-zA-Z0-9;]

For what you need it is

if(preg_match('/^[a-z0-9;]+$/i',$foo))
{
   $data = explode(';',$foo); 
  // it matches, do stuff
}

Explanation: From beginning of the string (^) to end ($), ensure there are one more of the following characters a-z, and numbers 0-9 in any order, case Insensitive (i).

Cheers,

Dan

[dagam3rz]

Now its working using your code. The + sign before the $ sign is what I omitted in my code. So I have decided to post it here for an immediate solution.

Thanks friend, you're the man.