Check if file exists in the upload file array

Question

I got form at frontend to submit stuff, wherein I need to check if file exists on submit.

Please note that the form submits array of files. It is failing the all logics I have been trying. Please notice the upload[] on second line of html.

HTML

<form method="post" id="upload-form" action="" enctype="multipart/form-data" >
<input type="file" multiple="true" name="upload[]">
<input type="submit" name="upload_attachments" value="UPLOAD">
<form>

PHP

if(!file_exists($_FILES['upload']['tmp_name'].'/'.$FILES['upload']['name'])) {

   $upload_error = 'file is not set !'; 
   return; //stop further code execution 
   }else{

   //do further validation   

   }

The code above shows 'file is not set !' in both cases, that is when I hit submit button without uploading a file and when I select to upload a file and hit the submit button.

What is happening here, am I even doing it right?

Basically I want to return a 'File Empty' message when someone hits the submit button without selecting a file to upload, and stop the further code execution.

mleko · Accepted Answer · 2014-05-29 10:01:00Z

6

$_FILES[<key>]['tmp_name'] - contains file path on server

$_FILES[<key>]['name'] - is just original file name

To address array of files file[] you need to fetch data by $_FILES[<key>][<property>][<id>]

try

if(!file_exists($_FILES['upload']['tmp_name'][0])) {

Manuals

http://www.php.net/manual/en/features.file-upload.php

http://www.php.net/manual/en/features.file-upload.multiple.php

edited May 29, 2014 at 10:01

answered May 29, 2014 at 9:53

mleko

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Comments

Hüseyin BABAL · Accepted Answer · 2014-05-29 10:15:04Z

2

You are appending tmp_name and name. That is not needed. Just check uploaded file name like;

if(empty($_FILES['upload']['name'])) {

   $upload_error = 'file is not set !'; 
   return; //stop further code execution 
}else{

   //do further validation   

}

or you can check file existence like;

if(!file_exists($_FILES['upload']['tmp_name'][0])) {

   $upload_error = 'file is not set !'; 
   return; //stop further code execution 
}else{

   //do further validation   

}

Your multiple file array format is like below;

Array
(
    [name] => Array
        (
            [0] => foo.txt
            [1] => bar.txt
        )

    [type] => Array
        (
            [0] => text/plain
            [1] => text/plain
        )

    [tmp_name] => Array
        (
            [0] => /tmp/phpYzdqkD
            [1] => /tmp/phpeEwEWG
        )

    [error] => Array
        (
            [0] => 0
            [1] => 0
        )

    [size] => Array
        (
            [0] => 123
            [1] => 456
        )
)

You can refer here

edited May 29, 2014 at 10:15

answered May 29, 2014 at 9:54

Hüseyin BABAL

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6 Comments

gurung Over a year ago

Second chunk - on hitting submit without file - shows the upload error but also the Warning: file_exists() expects parameter 1 to be a valid path, array given in......line 4. Hitting submit with file also gives the same result.

gurung Over a year ago

First chunk of your code - on hitting submit without file - is ignoring the if rule and goes to else rule, so no joy there. On hitting submit with the file - returns same result.

mleko Over a year ago

@HüseyinBABAL Your answer is completely invalid, check php.net/manual/en/features.file-upload.multiple.php

gurung Over a year ago

@Huseyin BABAL Yes, that is why I put an emphasis on upload[] and array part in the question, that is probably why all my other logics have failed till now. Checking on your new answer.

Hüseyin BABAL Over a year ago

Thanks @mleko. @gurung I have made a mistake in my updated question. I have reverted to previous one. Warning: file_exists() expects parameter 1 to be a valid path, array given in......line 4 error given because it must be !file_exists($_FILES['upload']['tmp_name'][0]). See my updated answer.

|

noia_0328 · Accepted Answer · 2014-05-29 09:57:48Z

0

You could use php's is_uploaded_file function.

Here's an excerpt from php's site about the function.

For proper working, the function is_uploaded_file() needs an argument like $_FILES['userfile']['tmp_name'], - the name of the uploaded file on the client's machine $_FILES['userfile']['name'] does not work.

http://www.php.net/manual/en/function.is-uploaded-file.php

answered May 29, 2014 at 9:57

noia_0328

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1 Comment

gurung Over a year ago

I do not have a problem with function. Just how it handles the array input.

Ahmad Dwaik 'Warlock' · Accepted Answer · 2014-05-29 10:19:47Z

0

Try this

   if (empty($_FILES['upload']['name']))
   {
   // No file was selected for upload, your (re)action goes here
   }

  note: place this code above
   if(!file_exists($_FILES['upload']['tmp_name'].'/'.$FILES['upload']['name'])) {

edited May 29, 2014 at 10:19

Ahmad Dwaik 'Warlock'

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answered May 29, 2014 at 9:52

Ezhil

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1 Comment

gurung Over a year ago

@Ezhil This does not take the array matter in consideration. But thanks for the effort. This is resolved now.

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