php file image upload validation

Question

   clearstatcache();
    if($_FILES['images']){
        if ($_FILES['images']['error'] !== UPLOAD_ERR_OK) {
               $error[] = "Upload failed with error code " . $_FILES['images']['error'];                                
       }

        $info = getimagesize($_FILES['images']['tmp_name']);
        if ($info === FALSE) {
           $error[] = "Unable to determine image type of uploaded file";
        }

        if (($info[2] !== IMAGETYPE_GIF) && ($info[2] !== IMAGETYPE_JPEG) && ($info[2] !== IMAGETYPE_PNG)) {
                $error[] = "Not a gif/jpeg/png";
        }
        if ($_FILES["images"]["size"] > 100000) {//1mb limit
        $error[] = "Sorry, your file is too large.";
        }
}

this is my php code. checking if the file is empty. and i want. if the file is exist then php will check the file image. but if the user did not choose a image. the validation will just ignor it. i cant debug it. if im not picking an image the code still validation and error said Warning: getimagesize(): Filename cannot be empty in C:\xampp\htdocs\savings\LiveUpdate.php on line 10

edit your question to include the HTML form for this. You should also Google that error, there are many hits for it and could be because of many reasons. — Funk Forty Niner, Nov 12 '16 at 15:19
Possible duplicate of [Warning: getimagesize() \[function.getimagesize\]: Filename cannot be empty warning message?](http://stackoverflow.com/questions/16043892/warning-getimagesize-function-getimagesize-filename-cannot-be-empty-warnin) — Funk Forty Niner, Nov 12 '16 at 15:27
Possible duplicate of [Photo Upload getimagesize() warning - filename cannot be empty](http://stackoverflow.com/questions/17632353/photo-upload-getimagesize-warning-filename-cannot-be-empty) — Funk Forty Niner, Nov 12 '16 at 15:27

schellingerht · Answer 1 · 2016-11-12T15:18:56.940

1

You didn't post your html, but the name images suggests you've a multi upload.

You should to specify the element of your array. Let me say [0]. See for more documentation: http://php.net/manual/en/features.file-upload.multiple.php

Change your code like so (see the added else, because if your upload fails, you only need to get the error!)

clearstatcache();

if(is_array($_FILES['images'])){
    if ($_FILES['images']['error'][0] !== UPLOAD_ERR_OK) {
       $error[] = "Upload failed with error code " . $_FILES['images']['error'][0];                                
    }
    else {
        $info = getimagesize($_FILES['images']['tmp_name'][0]);
        if ($info === FALSE) {
            $error[] = "Unable to determine image type of uploaded file";
        }

        if (($info[2] !== IMAGETYPE_GIF) && ($info[2] !== IMAGETYPE_JPEG) && ($info[2] !== IMAGETYPE_PNG)) {
            $error[] = "Not a gif/jpeg/png";
        }
        if ($_FILES["images"]["size"][0] > 100000) {//1mb limit
            $error[] = "Sorry, your file is too large.";
        }
    }
}

edited Nov 12 '16 at 15:18

answered Nov 12 '16 at 15:13

schellingerht

5,726
2
28
56

1

I fear the OP's been trying to upload files since their account creation on Stack. Have a look at all their questions http://stackoverflow.com/users/7148641/kenneth-suaverdez - I think you may be in for a very long haul. – Funk Forty Niner Nov 12 '16 at 15:18
its working. but i have still one problem. if i just submit(im not changing the file or opening any file) my code still check even i didn't choose a file and php error Warning: getimagesize(): Filename cannot be empty in C:\xampp\htdocs\savings\LiveUpdate.php on line 10 – Kenneth Suaverdez Nov 12 '16 at 15:19
I was editing my answer while you was commenting. See my edit. – schellingerht Nov 12 '16 at 15:20

php file image upload validation

1 Answers1