Warning: Undefined variable $book_barcode in D:\phpstudy_pro\WWW\php\book\show_books.php on line 169
Warning: Undefined variable $book_barcode in D:\phpstudy_pro\WWW\php\book\show_books.php on line 169
Warning: Undefined variable $book_barcode in D:\phpstudy_pro\WWW\php\book\show_books.php on line 178
Fatal error: Uncaught TypeError: sqlsrv_num_rows(): Argument #1 ($stmt) must be of type resource, bool given in D:\phpstudy_pro\WWW\php\book\show_books.php:205
Stack trace:
#0 D:\phpstudy_pro\WWW\php\book\show_books.php(205): sqlsrv_num_rows()
#1 {main}
thrown in D:\phpstudy_pro\WWW\php\book\show_books.php on line 205
