Question

我是php的新手，并尝试使用php在mysql数据库中上传图像文件。我尝试了各种教程，但它对我不起作用。代码段： -

<?php 
//connect to database. Username and password need to be changed 
mysql_connect("localhost", "root", ""); 

//Select database, database_name needs to be changed 
mysql_select_db("yelldb"); 

if (!$_POST['uploaded']){ 
//If nothing has been uploaded display the form 
?> 

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"  
ENCTYPE="multipart/form-data"> 
Upload:<br><br> 
<input type="file" name="image"><br><br> 
<input type="hidden" name="uploaded" value="1"> 
<input type="submit" value="Upload"> 
</form> 

<?php 
}else{ 
//if the form hasn't been submitted then: 

//from here onwards, we are copying the file to the directory you made earlier, so it can then be moved  
//into the database. The image is named after the persons IP address until it gets moved into the database 

//get users IP 
$ip=$_SERVER['REMOTE_ADDR']; 


//don't continue if an image hasn't been uploaded 
if (!empty($image)){ 
//copy the image to directory 

copy($image, "./temporary/".$ip.""); 

//open the copied image, ready to encode into text to go into the database 
$filename1 = "./temporary/".$_SERVER['REMOTE_ADDR']; 
$fp1 = fopen($filename1, "r"); 

//record the image contents into a variable 
$contents1 = fread($fp1, filesize($filename1)); 

//close the file 
fclose($fp1); 

//encode the image into text 
$encoded = chunk_split(base64_encode($contents1));  

//insert information into the database 
mysql_query("INSERT INTO servicelist (ImgData)"."VALUES ('$encoded')"); 

//delete the temporary file we made 
//unlink($filename1); 
}
}
?>

Answer 1

我们通常不会将整个图像保存在我们的数据库中。我们将在图片库中插入永久图片。使用这个php函数

move_uploaded_file(file,newloc)

这将从您的临时目录移动到永久目录。然后，从那里获取路径并将其插入数据库。

Answer 2

通常，您不会将整个图像保存到SQL数据库中。而是将磁盘路径或其他“指针”存储到实际文件中。

将您的代码更改为以下内容：

//don't continue if an image hasn't been uploaded 
if (isset($_POST['image'])){ 
 $image = $_POST['image'];
 //copy the image to directory 
 $path = "/some/path";

 move_uploaded_file($image,$path);

 //store the name and path. PS: you will want to validate your input, and look 
 //at using prepared statements. 
 //Concentating values like this is NOT safe, or ideal

 $location = $path . "/" . $image
 mysql_query("INSERT INTO servicelist (ImgData) VALUES (" . $location . ")"); 
}

但是，如果您仍希望将图像存储在SQL数据库中，请查看blob存储类型，而不是编码文本。

PHP move_uploaded_file

使用php将图像上传到mysql

2 个答案: