I am trying to create a PHP PDF uploader that prints the filename type and size. However when I click the upload button it says "Upload failed with error". If anyone could help with this I would really appreciate it!

<?php
$allowedExts = array("jpg", "jpeg", "gif", "png", "pdf");
$extension = end(explode(".", $_FILES["file"]["name"]));

if ($_FILES['file']['error'] !== UPLOAD_ERR_OK) {
    die("Upload failed with error " . $_FILES['file']['error']);

$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime = finfo_file($finfo, $_FILES['file']['tmp_name']);
$ok = false;
switch ($mime) {
   case 'image/jpeg':
   case 'application/pdf':
        $ok = true;
   default:
       die("Unknown/not permitted file type");
}
}
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br>";
    echo "Type: " . $_FILES["file"]["type"] . "<br>";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";

    if (file_exists("../pdf/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists: ";
      echo "<p>Image URL: <strong>" . $preferences->PREF_SHOPURL . "/pdf/" . $_FILES["file"]["name"] . "</strong></p>";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "../pdf/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "pdf/" . $_FILES["file"]["name"];
      echo "<p>&nbsp;</p>";
      echo "<p>PDF URL: <strong>" . $preferences->PREF_SHOPURL . "/pdf/" . $_FILES["file"]["name"] . "</strong></p>";
      }
    } 
?> 

maybe deal is in restricted permissions for write in a folder, check it out

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