PHP and Mysqli with Stored Procedure - php

Question

I have the below function that i want it to retrieve matching records from MySQL Database:
public function GetUserData($conn){
$username = $_SESSION['username'];
$stmt = $conn->prepare("CALL GetUserData(?)") or die("Query fail: " . mysqli_error($conn));
$stmt->bind_param("s",$username);
$stmt->execute() or die("Query fail: " . mysqli_error($conn));
while($row = $stmt->fetch()){
print_r($row);
}
exit;
}
GetUserData is a stored procedure as below:
CREATE DEFINER=`root`#`localhost` PROCEDURE `GetUserData`(IN `StoredUsername` VARCHAR(255))
LANGUAGE SQL
NOT DETERMINISTIC
CONTAINS SQL
SQL SECURITY DEFINER
COMMENT ''
BEGIN
select firstname from users where username=StoredUsername;
END
My problem, is that the print_r($row) only prints "1"
In case the matching rows is two, it prints "11"
I can't seem to figure out what am i using/doing wrong.
Thanks in advance for your assistance.

Answer 1

mysqli_stmt_fetch() is doing not what you think
Username should be passed via parameters
While connection should be a class variable
After getting result, you have to move over additional result returned by procedure, in order to be able to run other queries.
public function GetUserData($username){
$stmt = $this->conn->prepare("CALL GetUserData(?)");
$stmt->bind_param("s",$username);
$stmt->execute();
$data = $stmt->get_result()->fetch_all();
$this->conn->next_result();
return $data;
}
Also, instead of checking result of every database command manually, tell mysqli to throw errors by itself, automatically. Add this line before mysqli_connect and forget all these ugly or die forever:
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);