/** * Strips whitespace (or other UTF-8 characters) from the beginning and * end of a string. This is a UTF8-aware version of [trim](http://php.net/trim). * * $str = UTF8::wptrim($str); * * @author Andreas Gohr <*****@*****.**> * @param string $str input string * @param string $charlist string of characters to remove * @return string */ public static function trim($str, $charlist = NULL) { if ($charlist === NULL) { return trim($str); } return UTF8::wpltrim(UTF8::rtrim($str, $charlist), $charlist); }