php copy function, failed to open stream: Permissi

问题:

I am trying to upload image on server, below is script that I found on Internet and in worked locally, when I deployed code and database is gives me "failed to open stream: Permission denied" error.

<?php
//define a maxim size for the uploaded images in Kb
 define ("MAX_SIZE","5000"); 

//This function reads the extension of the file. It is used to determine if the file  is an image by checking the extension.
 function getExtension($str) {
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $ext = substr($str,$i+1,$l);
         return $ext;
 }

//This variable is used as a flag. The value is initialized with 0 (meaning no error  found)  
//and it will be changed to 1 if an errro occures.  
//If the error occures the file will not be uploaded.
 $errors=0;

    //reads the name of the file the user submitted for uploading
    $image=$_FILES['image']['name'];

    //if it is not empty
    if ($image) 
    {
    //get the original name of the file from the clients machine
        $filename = stripslashes($_FILES['image']['name']);
    //get the extension of the file in a lower case format
        $extension = getExtension($filename);
        $extension = strtolower($extension);
    //if it is not a known extension, we will suppose it is an error and will not  upload the file,  
    //otherwise we will do more tests
 if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png")) 
        {
        //print error message
            echo '<h1>Nepoznata vrsta fajla!</h1>';
            $errors=1;
        }
        else
        {
//get the size of the image in bytes
 //$_FILES['image']['tmp_name'] is the temporary filename of the file
 //in which the uploaded file was stored on the server
 $size=filesize($_FILES['image']['tmp_name']);

//compare the size with the maxim size we defined and print error if bigger
if ($size > MAX_SIZE*1024)
{
    echo '<h1>To large file!</h1>';
    $errors=1;
}

//we will give an unique name, for example the time in unix time format
$image_name=time().'.'.$extension;
//the new name will be containing the full path where will be stored (images folder)
$newname="Content/Images/".$image_name;
//we verify if the image has been uploaded, and print error instead
//$copied = copy($_FILES['image']['tmp_name'], $newname);

$copied = copy('$_FILES['image']['tmp_name'], $newname);

//echo $_FILES['image']['tmp_name'].'<br/>';
//echo $_FILES['image']['name'];

if (!$copied) 
{
    echo '<h1>Error occurred!</h1>';
    $errors=1;
}}}


//If no errors registred, print the success message
 /*if(isset($_POST['Submit']) && !$errors) 
    {
    echo "<h1>You have successfully uploaded image.</h1>";
}*/

 ?>

I saw some answerers from stackoverflow like answers1 and answer2 but I am not sure how to do that? Is there any other suggestion?

thanks.

回答1:

Make sure the folder permissions where you are saving the file (tmp) are set to 777. Type chmod -R 777 path on your terminal

回答2:

The Folder You Trying To Copy Your Files Must Have Same Permission As Your PHP User.(apache user if your server is apache)

./
drwxrwxr-x root root Application
drwxrwxr-x apache apache FilesystemDir

回答3:

if you also can not create file in destination folder, and you already put permission on it 755 please check the following:

If your file is: /path/to/test-in.txt

You should have X permission on:

• /path
• /path/to
• and read permission on /path/to/test-in.txt

Check more details here fopen() fails to open stream: permission denied, yet permissions should be valid

回答4:

Your copy command appears to have syntax errors:

$copied = copy('$_FILES['image']['tmp_name'], $newname);
               ^--- extra quote?

If you're trying to do something like

$copied = copy("$_FILES['image']['tmp_name']", $newname);

it won't work anyways. PHP's parser isn't gready, and will see that as

$_FILES['image'] -> array
['tmp_name'] -> string

and try to do

$copied = copy("Array['tmp_name']" ....);

And in any case, you should use move_uploaded_file() to handle moving uploaded files, rather than copy(). m_u_l has extra checks to make sure no one's tampered with the file in the time between the upload completed and your script trying to move it.