is_array detects an array and returns false

<code>echo $res;
var_dump($res);
var_dump(is_array(res));</code>

$res is the result of the database query. If there is a result, it returns an array. If there is no result, it returns false. But now even if $res is an array, it is false. Below is the display result.

<code>Array
array(3) { ["ID"]=> string(1) "1" ["USERNAME"]=> string(4) "root" ["NICKNAME"]=> string(17) "复仇者联盟~~" } 
bool(false)</code>

Is it because of the php configuration?

Reply content:

<code>echo $res;
var_dump($res);
var_dump(is_array(res));</code>

$res is the result of the database query. If there is a result, it returns an array. If there is no result, it returns false. But now even if $res is an array, it is false. Below is the display result.

<code>Array
array(3) { ["ID"]=> string(1) "1" ["USERNAME"]=> string(4) "root" ["NICKNAME"]=> string(17) "复仇者联盟~~" } 
bool(false)</code>

Is it because of the php configuration?

var_dump(is_array($res));
You missed $

Feeling sorry, on the importance of syntax highlighting

Haha, this kind of little mistake is often made