note 126182 added to function.str-replace

To remove all characters from string $b that exist in string $a: $a="ABC"; $b="teAsBtC"; echo str_replace(str_split($a),'',$b); Output: test To remove all characters from string $b that don't exist in string $a: $a="ABC"; $b="teAsBtC"; echo str_replace(str_split(str_replace(str_split($a),'',$b)),'',$b); Output: ABC ---- Server IP: 45.112.84.4 Probable Submitter: 45.112.85.242 (proxied: 66.113.15.212) ---- Manual Page -- https://php.net/manual/en/function.str-replace.php Edit -- https://main.php.net/note/edit/126182 Del: integrated -- https://main.php.net/note/delete/126182/integrated Del: useless -- https://main.php.net/note/delete/126182/useless Del: bad code -- https://main.php.net/note/delete/126182/bad+code Del: spam -- https://main.php.net/note/delete/126182/spam Del: non-english -- https://main.php.net/note/delete/126182/non-english Del: in docs -- https://main.php.net/note/delete/126182/in+docs Del: other reasons-- https://main.php.net/note/delete/126182 Reject -- https://main.php.net/note/reject/126182 Search -- https://main.php.net/manage/user-notes.php