Question

Here’s the code

require_once 'functions.php';
require_once 'cfg.php';
$mysqli = new mysqli($dbhost, $dbuser, $dbpass, $db);
if ($mysqli->connect_error) {
    die('Connect Error (' . $mysqli->connect_errno . ') '. $mysqli->connect_error);
}
$query='SELECT * FROM cobra';
$result=$mysqli->prepare($query);
$result->execute();
$result->close();
echo array_values($result);

I am getting error after error. Initially I had the query part contained in a function, but kept running into all sorts of issues with variable scope for $mysqli.

The most recent error is: Fatal error: Call to a member function execute() on a non-object in …cobra/lib/distro.php on line 11

Line 11 is:

$result->execute();

I would like some background knowledge about the different ways to go about this. I am learning everything I can, but quickly approaching a deadline as well. Please help.

Answer 1

You need to check that $result is a valid mysqli_stmt object.

$query='SELECT * FROM cobra';
$result=$mysqli->prepare($query);
if ($result instanceof mysqli_stmt) {
    $result->execute();
} else {
    // determine what went wrong
    echo $mysqli->error;
}