限制取消链接仅限一个

Question

Aloha, I have a download button and when the image is downloaded it`s dispalyed using session (path). I then delete the picture that was used before, but when the name of the image is the same, "unlink($_SESSION['picture']);" deletes both of them- I want to delete ony one each time... Something like this "unlink($_SESSION['picture'] < 1);" which doesn't work. Please Help:), Aloha

And here's the code which saves the picture..

session_start();

$filename    = $_FILES["picture"]["tmp_name"];
$destination = "upload/" . $_FILES["picture"]["name"]; 
move_uploaded_file($filename, $destination); //save uploaded picture in your directory
$_SESSION['picture'] = $destination;

Answer 1

Has we've said. Start with uploading the file

session_start();

$filename    = $_FILES["picture"]["tmp_name"];
//Cutted the file name from the $destination
$destination = "upload/"; 

//Insert Into DB the info.
//Query Similar To
$sql = "INSERT INTO mytable (filename) VALUES (".$filename.")";

//Get from DB the ID generated.
$sql2 = "SELECT id FROM mytable WHERE filename = '".$filename."'";
//Fetch the data into a $filenameNew var

move_uploaded_file($filename, $destination.$filenameNew); //save uploaded picture in your directory with the db id

$_SESSION['picture'] = $destination.$filenameNew;

On delete instead

 $sql2 = "SELECT id FROM mytable WHERE ..."; //Get the id name of the file
//put id on a var - $toUnlink
unlink($toUnlink);

$sqlDelete = "DELETE FROM mytable WHERE id = '".$toUnlink."'";

This is a working chain. You need to some work to make it works correctly based on your application.