preg_replace与阿拉伯语

Question

I want to add a text to mysql with arabic characters, but I always get weird signs when i use preg replace.

$str = preg_replace('/[^a-z0-9_-äÄüÜöÖ]/isU', '', $str); 

Answer 1

I think you can use the small letter '/u' after the regular expression, e.g.

$str = preg_replace('/[^أب]/u', '', $str); 

Notice that, same problem will occur whenever you use capital '/U' after the regular expression.