PHP计数行返回错误

Question

i'm using the following to count the number of rows in my table:

$book_count = query("SELECT status FROM scifi_book WHERE read = $uid");
(count($book_count));
echo $book_count;

and i get the following error:

Notice:  Array to string conversion on line 167 

(which is the line echo $book_count;)

FIY, the query function is defined and works fine. Never had any issues to insert, select, update and delete.

Am I missing something here?

Answer 1

Try this:

$book_count = query("SELECT status FROM scifi_book WHERE read = $uid");
echo count($book_count);

Also, you need to use print_r($book_count) since your $book_count is not a string.