Not Getting Row From Mysqli - php

Question

I am using mysqli to get the row but it is not giving me row, and there is no error in query.
$query="select * from members where useremail='$user_email' and password='$password'";
$result=$db->query($query);
$row = $db->fetch_array($result);
echo $row['id'];
My query Function
function query($query){
$result=mysqli_query($this->conn, $query);
if(!$result){
echo $this->err_msg = mysqli_error($this->conn);
return false;
}else{
return $result;
}
}
My fetch_array Function
function fetch_array($result){
return mysqli_fetch_array($result);
}
How can i get Row using mysqli ?

Answer 1

Change your original code to reflect bound parameters using mysqli, this is more secure and should work
$query="select * from members where useremail='$user_email' and password='$password'";
$result=$db->query($query);
$row = $db->fetch_array($result);
echo $row['id'];
to bound parameters using mysqli prepared statements
$query="select id from members where useremail=? and password=?"; // Don't use select *, select each column, ? are placeholders for your bind variables
$stmt = $connection->prepare($query);
if($stmt){
$stmt->bind_param("ss",$user_email,$password); // Bind in your variables, s is for string, i is for integers
$stmt->execute();
$stmt->bind_result($id); // bind the result to these variables, in the order you select
$stmt->store_result(); // Store if large result set, can throw error if server is setup to not handle more than x data
$stmt->fetch();
$stmt->close();
}
echo $id; // this would be same as $row['id'], $id now holds for example 5.
If you select multiple things, such as "SELECT id,name FROM...", then when you bind_result(..), just bind them n there. $stmt->bind_result($id,$name);
now $id and $name hold the column data for that row matching your query. If there would be multiple rows matching, instead of $stmt->fetch() you'd do
while($stmt->fetch()){ // just like while($row = $result->fetch_assoc()){}
echo $id;
echo $name
}