mysql count into PHP variable

Question

Let say that we have the following query:

SELECT DISTINCT COUNT(`users_id`) FROM `users_table`;

this query will return the number of the us

Answer 1

Also, an alternative using mysqli, which you should be using anyway for parameter interpolation:

$statement = $connection->prepare($the_query_from_above);
$statement->execute();
$statement->bind_result($nr_of_users);
$statement->fetch();

Answer 2

Like this:

// Changed the query - there's no need for DISTINCT
// and aliased the count as "num"
$data = mysql_query('SELECT COUNT(`users_id`) AS num FROM `users_table`') or die(mysql_error());

// A COUNT query will always return 1 row
// (unless it fails, in which case we die above)
// Use fetch_assoc for a nice associative array - much easier to use
$row = mysql_fetch_assoc($data);

// Get the number of uses from the array
// 'num' is what we aliased the column as above
$numUsers = $row['num'];