Regular: Filtering other special symbols in addition to English and Chinese characters

        $STR = ' abc ... 1 ... Good...... （... 234*& (*&)) (  ※  o (∩_∩) o ha! √ (⊙o⊙)? ';        Filtering other special symbols in addition to English and Chinese characters        $tmp = Str_replace ($REPLACEARR, ", $str);        $tmp 1 = preg_replace ('/(?! [A-za-z\\x{4e00}-\\x{9fa5}]) /', ', $str);    This is the actual requirement        $tmp 2 = preg_replace ('/([\\x80-\\xff])/', ', $str);    This is the filter kanji        $tmp 3 = preg_replace ('/[\\x{4e00}-\\x{9fa5}]/u ', ' ', $str);    This is also filtering Chinese characters        
";        Var_dump ($tmp);        Echo '
';        
";        Var_dump ($tmp 1);        Echo '
';        
";        Var_dump ($tmp 2);        Echo '
';        
";        Var_dump ($tmp 3);        Echo '
';        Expected Result: ABC good       

Current code execution result (all wrong)

Ask you to be the great God, or there are other better ways.
Main purpose: Replace non-English letters and other symbols of non-Chinese characters in strings with null. Default encoding: GB2312

Reply to discussion (solution)

$STR = ' abc ... 1 ... Good...... （... 234*& (*&)) (  ※  o (∩_∩) o ha! √ (⊙o⊙)? '; $str = Iconv (' GBK ', ' utf-8 ', $str); $str = preg_replace ('/[\w_]/u ', ' ', $str); $str = Iconv (' utf-8 ', ' GBK ', $str); Echo $st R

ABC1 good 234OO ha o

Like Sogou expression in the special symbol, still can't filter out?

That looks like a letter, I got it wrong!
Thanks to Xu for his great support!

Moderator, I just overlooked a problem, I follow your code to run the results, is no kanji:

