if ($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif") {
        $error .= "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
        $uploadOk = 0;
    }
    // Check if $uploadOk is set to 0 by an error
    if ($uploadOk == 0) {
        $error .= "Sorry, your file was not uploaded.";
        // 	if everything is ok, try to upload file
    } else {
        if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
        } else {
            $error .= "Sorry, there was an error uploading your file.";
        }
    }
    if (!empty($name) && !empty($price) && !empty($description) && !empty($quantity)) {
        $admin->addProduct($name, $price, $description, $category_id, $quantity, $target_file);
        $error = "Successfully added:::add more";
    } else {
        $error = "Please fill all the texts in the fields";
    }
}
?>

<div class="container">
 <div class="main" style="margin-top: 10px;">
<form action="admin_product_add.php" method="post" class="smart-green" enctype="multipart/form-data">
    <h1>Add Product
        <span><?php 
echo $error;
?>
</span>