如何上传文件数组？

Question

I'm trying to build an array of files by submitting a form several times, then move those files to a directory, but it's not working. Every uploads just overrides the previous and then it doesn't even move that one (the upload_to_file() function doesn't do anything)

HTML:

<form id="form" action="home.php" method="post" enctype="multipart/form-data">
        <input type="hidden" name="MAX_FILE_SIZE" value="8000000">
        <input class="upload_btn" type="file" name="images[]" id="image_file">
        <input type="submit" id="img_submit" class="form_button" name="submit_image" value="upload"/>
</form>

It is important that there is only one upload button which can be used to upload many files.

I need them to be stored in an array so I can display their ['name'] anywhere with a loop. for ($i = 0; $i < count($_FILES['images']['name']); $i++){}

Then once another form is submitted it calls a function to move each file in the array to a directory.

Function inside an included php file:

function upload_to_file(){
$image_paths = array();
$target_dir = "uploads/images/";
$path = $target_dir . basename($_FILES['images']['name'][0]);

if(isset($_FILES['images']['name'][0]) && $_FILES['images']['size'][0] > 0)
{
    if (move_uploaded_file($_FILES['images']['tmp_name'][0], $path)) {
        $image_paths[0] = "uploads/images/";
    }
}
return $image_paths;

}

I'm only testing it with the first element in the array, but will need to make a loop later.

Answer 1

Here is the program, which help you to upload multiple files. in the code "sub" is the submit button name. "upload" is the name of file controller, the uploaded files are stored in the directory called "img" that you have to create on your root folder.

<?php

if (isset($_POST['sub'])) {
    if (count($_FILES['upload']['name']) > 0) {
     for ($i=0; $i<count($_FILES['upload']['name']); $i++) {
      $tmpFilePath = $_FILES['upload']['tmp_name'][$i];
      if ($tmpFilePath != "") {
        $shortname = $_FILES['upload']['name'][$i];
        $filePath = "img/" . date('d-m-Y-H-i-s').'-'.$_FILES['upload']['name'][$i];
        if (move_uploaded_file($tmpFilePath, $filePath)) {
          $files[] = $shortname;                    
        }
      }
    }
  }
  echo "<h1>Uploaded:</h1>";    
  if(is_array($files)){
    echo "<ul>";
    foreach($files as $file){
      echo "<li>$file</li>";
    }
    echo "</ul>";
  }
}
?>

HTML Code is given

<form action="" enctype="multipart/form-data" method="post">
    <input id='upload' name="upload[]" type="file" multiple="multiple" />
    <input type="submit" name="sub" value="Upload Now">
</form>