Multiple MySQLi prepared UPDATE statement in a SELECT - php

Question

I have two or more statements on one page of my site. And it does not work properly.
The first code is like that:
$query = "SELECT gpname FROM guineapigs WHERE fbid=?";
if ($statement = $mysqli->prepare($query)) {
$statement->bind_param('s', $_SESSION[FBID]);
$statement->execute();
$statement->bind_result($gpname);
while($statement->fetch()) {
echo $gpname;
}
}
$statement->close();
The problem is when I try to add the second code to it:
if($_GET[buy]=='ch'){
$statement = $mysqli->prepare("UPDATE users SET `money` = `money`+ 22000 WHERE gpname=?");
$statement->bind_param('s', $gpname);
$results = $statement->execute();
header( "Location: /test.php?bsuccess=ch" );
}
if($_GET[bsuccess]=='ch'){
echo "Successfully added 22000 money..";
}
My code looks like this, but not working:
$query = "SELECT gpname FROM guineapigs WHERE fbid=?";
if ($statement = $mysqli->prepare($query)) {
$statement->bind_param('s', $_SESSION[FBID]);
$statement->execute();
$statement->bind_result($gpname);
while($statement->fetch()) {
if($_GET[buy]=='ch'){
$statement2 = $mysqli->prepare("UPDATE users SET `money` = `money`+ 22000 WHERE gpname=?");
$statement2->bind_param('s', $gpname);
$statement2->execute();
header( "Location: /test.php?bsuccess=ch" );
}
if($_GET[bsuccess]=='ch'){
echo "Successfully added 22000 money..";
}
}
}
$statement->close();
What am I doing wrong? I want to add even more UPDATE querys after selecting.

Answer 1

Ohh, I'm an idiot! That was the mistake:
Instead of
while ($stmt1->fetch()){
};
needs only:
while ($stmt1->fetch());
Here's a working example with some development:
<?php
ob_start();
session_start();
include_once 'dbtest.php';
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
try {
$mysqli->autocommit(FALSE); //turn on transactions
$stmt1 = $mysqli->prepare("SELECT fbname,fbemail FROM users WHERE fbid = ?");
$stmt1->bind_param("s", $_SESSION['FBID']);
$stmt1->execute();
$stmt1->bind_result($fbname,$fbemail);
while ($stmt1->fetch());
$stmt2 = $mysqli->prepare("INSERT INTO test (name,email) VALUES (?, ?)");
$stmt2->bind_param("ss", $fbname, $fbemail);
$stmt2->execute();
$stmt2->close();
$stmt1->close();
$mysqli->autocommit(TRUE); //turn off transactions + commit queued queries
} catch(Exception $e) {
$mysqli->rollback(); //remove all queries from queue if error (undo)
error_log($e);
}
?>
Thank you anyway!!