我在DB中插入图像时遇到问题.

该表具有以下结构：

> id-> INT(3)->自动增量

>名称-> VARCHAR(30)

> extension-> VARCHAR(10)[可能太短]

> img-> MEDIUMBLOB

插入图像的PHP代码为：

if($_FILES['file']['error']==0){

$result = is_uploaded_file($_FILES['file']['tmp_name']);

if(!$result){

echo "Upload failed";

}else{

$type = explode("/", $_FILES['file']['type']);

$extension = $type[1];

$name = $_FILES['file']['name'];

$img = $_FILES['file']['tmp_name'];

$img = file_get_contents($_FILES['file']['tmp_name']);

$img = addslashes ($img);

}

$sql = "INSERT INTO images (name, extension, img) VALUES ('$name', '$extension', '$img')";

$result = $mysqli->query($sql);

if($result){

echo "insertion was successful";

}else{

echo "insertion failed: ".$mysqli->error;

}

这就是我尝试查看img的方法：

$sql = "SELECT name, extension, img FROM images WHERE id='1'";

$result = $mysqli->query($sql);

if($result){

$a = $result->fetch_assoc();

header ("Content-type: image/".$a['estensione']);

echo $a['img'];

}else{

echo "AAAAAAAAA

---

";

echo $mysqli->error;

}

插入还可以,但是我无法查看图像.

另外,还有另一种在Db中上传图片的方法吗？