How to write an array post in current Intel - input file

Question

Next guys, I’m adapting a file upload system to php. All the bulk has already been created, Insert and update and such, but in the middle of the logic needing a conditional to check if the input file field was used, if it is empty do nothing, if it is filled do the update. I have the partial solution they gave me that was this:

if ($_POST['file'] != '') {
 UPDATE
}

But I’m using php and the upload field comes from an array as follows

<input type="file" id="file1" name="file1[]"></input> 

How do I write this if considering the current loop ?

My bow tie code is like this today:

if($numFile <= 0){ //Laço que vai servir pra checar se o input está vazio
    echo 'Selecione uma Imagem!';
}else{
for($i = 0; $i < $numFile; $i++){
    $name   = $file['name'][$i];
    $type   = $file['type'][$i];
    $size   = $file['size'][$i];
    $error  = $file['error'][$i];
    $tmp    = $file['tmp_name'][$i];  .... e o programa segue

I needed to somehow check if the input is empty, if the value is set in the $numFile then I do the Update or not, all the rest of the program is working, already with bank images and everything. The problem is that without it is conditional, independent of already having an upada image, if I click upload without submitting a photo it will overwrite my bank with white space

Answer 1

Test like this:

$file= $_FILES['file1'];   // trate este valor como uma array
foreach( $file as $esteFile ) {
  if( $esteFile != '') {
     // UPDATE
    }
}

Answer 2

I believe that because it is a Voce array I should validate as such.

note that your input is so

    ""

the idea would be that he would be with the numbers set, like:

// entao se testaria mais ou menos assim...

for($i=1;$total;$i++){

   if( $file['error'][$i] == 0){
     echo 'este veio com erro!';
   } else{

    // continua o upload

   }
}

I believe that’s it

Answer 3

To check if there is any upload(file), you use $_FILES and not $_POST.

if (isset($_FILES['file1']) && $_FILES['file1'] != ''){
   //update
}