note 59403 added to function.substr-replace

I created this because of the need to mask a credit-card number like **** **** **** 8862 string mask ( string str, int start [, int length] ) mask() masks a copy of str delimited by the start and (optionally) length parameters with asterisks (*) in place of non-whitespace characters <?php function mask ( $str, $start = 0, $length = null ) { $mask = preg_replace ( "/\S/", "*", $str ); if ( is_null ( $length )) { $mask = substr ( $mask, $start ); $str = substr_replace ( $str, $mask, $start ); } else { $mask = substr ( $mask, $start, $length ); $str = substr_replace ( $str, $mask, $start, $length ); } return $str; } ?> ---- Manual Page -- http://www.php.net/manual/en/function.substr-replace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+59403 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+59403&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+59403&report=yes Search -- http://master.php.net/manage/user-notes.php