Show DB In Array Using Foreach Loop - php

Question

I'm trying to use foreach loop, for showing my DB but I always get error. What I want is to print each row and column. My code is like this :
$sql = "SELECT a.*, b.klasifikasi FROM kl_stre as b
INNER JOIN data_latih as a
ON a.id_stres = b.id_stres
ORDER BY a.id_dl";
$result = mysqli_query($conn, $sql);
foreach ($result as $dt_train => $row_dt_train):
foreach ($row_dt_train as $attr => $attr_dt_train):
echo $result[$row_dt_train][$attr_dt_trian]; // this line is the problem
endforeach;
endforeach;
the error I get is
Warning: Illegal offset type in C:\xampp\htdocs\knn\array_db.php on line 43
Would you mind explaining what is wrong with this code and how to solve this problem ?

Answer 1

you need to first check your query
if (!$result) {
die('query is not correct'.mysqli_error($conn));//$con is your database connection paste it after $result = mysqli_query($conn, $sql);
}
after that fetch record and simply remove foreach and try to use while() loop
while ($row=mysqli_fetch_array($result)) {
echo $row['your database field name'];
}
your code will be
$sql = "SELECT a.*, b.klasifikasi FROM kl_stre as b
INNER JOIN data_latih as a
ON a.id_stres = b.id_stres
ORDER BY a.id_dl";
$result = mysqli_query($conn, $sql);
if (!$result) {
die('query is not correct'.mysqli_error($conn));
}
while ($row=mysqli_fetch_array($result)) {
echo $row['your database field name'];
}