Question

I’m using HTML entities on a string of rich html text, but some characters like  are still coming through… how can I either force english-only while still preserving html formatting or force them to HTML?

Answer 1

I think the following piece of code from phpbuilder seems reasonable. It checks some input ($string) for invalid characters using regex.

if(preg_match("@[^a-zA-Z0-9\~`\!\@#$%\^&\*\(\)_\-\+\=\{\}\[\]\'\"\:\;\?\/\>\<\.\,\|]*@", $string) {
    // There are non-english characters....
} else {
    // There are no non-english characters
}

Good luck.