echo $res;var_dump($res);var_dump(is_array(res));
$res is the result of the database query, the result returns an array, and no result returns false. But now even if $res is an array, it is also flase. The following is the display result.
Arrayarray(3) { ["ID"]=> string(1) "1" ["USERNAME"]=> string(4) "root" ["NICKNAME"]=> string(17) "复仇者联盟~~" } bool(false)
Is the reason for PHP configuration?
Reply content:
echo $res;var_dump($res);var_dump(is_array(res));
$res is the result of the database query, the result returns an array, and no result returns false. But now even if $res is an array, it is also flase. The following is the display result.
Arrayarray(3) { ["ID"]=> string(1) "1" ["USERNAME"]=> string(4) "root" ["NICKNAME"]=> string(17) "复仇者联盟~~" } bool(false)
Is the reason for PHP configuration?
Var_dump (Is_array ($res));
You missed $.
Distressed $, on the importance of syntax highlighting
Haha, this little mistake often makes