PHP multiple image uploads the first image only

Question

I'm trying to 'upload' multiple images from one input field. I move them to my "uploads" directory and save their path into my database. The moving part works fine, but for some reason it stores only the first selected image's path and also gives a warning message:

mysqli_stmt::bind_param(): Couldn't fetch mysqli_stmt in

The code:

    $filesTempName = $_FILES['images']['tmp_name'];
    $counted = count($filesTempName);
    $maxSize = 2100000;
    $errorMsg = "";

    if ($counted > 5) {
        $errorMsg = "Maximum 5 images!";
    } else {
        for ($i = 0; $i < $counted; $i++) {
            if (empty($filesTempName[$i])) {
                $stmt->execute();
                $stmt->close();
                $link->close();
            } else {
                $allowed_types = array(IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_GIF);
                $detectedType = exif_imagetype($filesTempName[$i]);

                if ($_FILES["images"]["size"][$i] > $maxSize) {
                    $errorMsg = "max 2mb!";
                } elseif (!in_array($detectedType, $allowed_types)) {
                    $errorMsg = "error!";
                } else {
                    $stmt->execute(); //I store other data here, it works fine.
                    $stmt->close();

                    $productid = $link->insert_id;

                    $statement = $link->prepare("INSERT INTO images(thumbnailimage, productid) VALUES(?, ?)");
                    for ($i = 0; $i < $counted; $i++) {
                        $file = $filesTempName[$i];
                        if (is_uploaded_file($file) && !empty($file)) {
                            $data = "uploads/" . time() . $_FILES["images"]["name"][$i];
                            move_uploaded_file($file, $data);
                            $statement->bind_param("si", $data, $productid);
                            $statement->execute(); // I get error for this line
                            $statement->close();
                        }
                    }
                }
            }
        }
    }

This part throws the error:

$statement->execute();

Answer 1

Remove $statement->close(); from your code. You should not be closing the statement or the connection manually. Same goes for $link->close();.

Answer 2

move $statement->close(); to after loop

$filesTempName = $_FILES['images']['tmp_name'];
$counted = count($filesTempName);
$maxSize = 2100000;
$errorMsg = "";

if ($counted > 5) {
    $errorMsg = "Maximum 5 images!";
} else {
    for ($i = 0; $i < $counted; $i++) {
        if (empty($filesTempName[$i])) {
            $stmt->execute();
            $stmt->close();
            $link->close();
        } else {
            $allowed_types = array(IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_GIF);
            $detectedType = exif_imagetype($filesTempName[$i]);

            if ($_FILES["images"]["size"][$i] > $maxSize) {
                $errorMsg = "max 2mb!";
            } elseif (!in_array($detectedType, $allowed_types)) {
                $errorMsg = "error!";
            } else {
                $stmt->execute(); //I store other data here, it works fine.
                $stmt->close();

                $productid = $link->insert_id;

                $statement = $link->prepare("INSERT INTO images(thumbnailimage, productid) VALUES(?, ?)");
                for ($i = 0; $i < $counted; $i++) {
                    $file = $filesTempName[$i];
                    if (is_uploaded_file($file) && !empty($file)) {
                        $data = "uploads/" . time() . $_FILES["images"]["name"][$i];
                        move_uploaded_file($file, $data);
                        $statement->bind_param("si", $data, $productid);
                        $statement->execute(); // I get error for this line
                        
                    }
                }
                $statement->close();
            }
        }
    }
}