Censor script?

[Kemi]

Was trying to make a script to censor swear words
Here's my script:

		censor(string)
{
    filehandle = FS_FOpen("badwords.txt", "read");
    while(badword != undefined)
    {
        badword = FS_ReadLine(filehandle);
        msg = StrRepl(string, badword, "******"));
    }
    return msg;
} 
	

Trying to make it that only admins with ranks of 40+ can swear, anyone else it will be censored.
This is just as a test, not something I actually plan to implement into the server.
Just wanted to know if it's bad to use the FS_ReadLine command in a loop such as that and if there would be any problems if I did without a large wait.