[UPHPU] Regex help.

[Kyle Waters]

Ash wrote:
> I have a database that has addresses in it. The only characters 
> allowed are A-z 0-9 and ,()':.
>
> The database also has other characters in it, but I want to delete all 
> the characters that are not allowed (because they crash my program 
> that prints the addresses to the printer.)
>
> It's just a text file, so I could run sed on it, but how do you test 
> for just those characters?
>
So if I understand you have a text file and you want to remove all 
characters that are not A-Z a-z ,()':. 

I would do the following:

$contents=file_get_contents("file.txt");

preg_replace('[^A-Za-z\,\(\)\'\:\.]','',$contents);

file_put_contents("file.txt",$contents);



That will remove all other characters from the file. (Though you should 
wait until someone else posts and fixes my regex).

Kyle