Hi,
> function is_valid_preg_pattern( $pattern ) {
> $is_valid = true;
>
> set_error_handler( function () use ( &$is_valid ) { $is_valid =
> false; return true; }, E_WARNING );
> preg_match( $pattern, '' );
> restore_error_handler();
>
> return $is_valid;
> }
Setting and restoring the global error handler to validate a pattern
is exactly what I would qualify as clunky/hacky. Also this requires
internal knowledge on how this works, which feels very wrong for
something like that.
— Alexandre Daubois
