mysqli_fetch_array() Expects MySQLi Result, Not Boolean

In the given PHP code, the error "mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given" indicates that the query execution using mysqli_query() has failed and it returned false instead of a mysqli_result object.

The code starts by assigning values to the $fb_id and $locale variables from the $user_profile array. It then executes the following SQL query:

$check1_task = "SELECT * FROM `users` WHERE `fb_id` = " . $fb_id . " LIMIT 0, 30 ";
$check1_res = mysqli_query($con, $check1_task);

If the query execution is successful, $check1_res will contain a mysqli_result object. However, if the query fails due to any reason, it will return false.

To debug the issue, the recommended approach is to use the mysqli_error() function to retrieve the error message and trigger it using trigger_error(). This will provide more information about why the query failed.

if (!$check1_res) {
    trigger_error(mysqli_error($con), E_USER_ERROR);
}

By adding this code after the mysqli_query() line, you can get a detailed error message about the query failure. This should help you identify and resolve the issue.

For more information on this topic, refer to the following resources:

• PHP mysqli_error() Function: http://www.php.net/manual/en/mysqli.error.php