php - 上传图片的更好方法？

Question

PHP

$Product_images = $_FILES['product_img'];

foreach($Product_images['name'] as $key => $value) {

   $file_name = iSQLsecure($objConnection, $value); // iSQLsecure is my own custom function
   $file_name = trim($file_name);
   $file_tmp = $Product_images['tmp_name'][$key];
   $file_size = $Product_images['size'][$key];

   $file_ext = explode('.', $file_name);
   $file_ext = strtolower(end($file_ext));

   $file_trim_name = rtrim($file_name, ".".$file_ext);
   $file_name_new = uniqid($file_trim_name . "-", true) . '.' . $file_ext;

   $file_destination = 'img/products/' . $file_name_new;
   $image_alt = str_replace("img/products/", "", $file_destination);

   move_uploaded_file($file_tmp, "../" . $file_destination);

   $query_images = "INSERT INTO images (image_path, image_alt, fk_product_id)

   VALUES

   ('{$file_destination}', '{$image_alt}', '{$new_id}')";
   $objConnection->query($query_images) or die($objConnection->error);

}

这行得通，但在我看来，我不应该多次执行 $query_images。一定有一种方法可以循环遍历我上传的所有图像，但只执行一次 $query_images 吗？

Answer 1

是的，有。使用数组添加每个插入值集并在循环后创建单个查询字符串然后执行一次。

$Product_images = $_FILES['product_img'];

$sql_insert = array();

foreach($Product_images['name'] as $key => $value) {

    // ... Previous code until $query_images = ...

    $sql_insert[] = "('{$file_destination}', '{$image_alt}', '{$new_id}')";
}

$query_images = "INSERT INTO images (image_path, image_alt, fk_product_id) 
                 VALUES " . implode(',', $sql_insert);
$objConnection->query($query_images) or die($objConnection->error);