PHP and html uploader - php

Question

I have a problem with my code but it is not about and error.
1) when I hit to refresh I still see previously echoing variables.
2)when I choose a file, it is supposed to transfer from temp_name into the 'uploads/' but it doesn't + it doesn't throw 'uploaded' message.
3) when I don't choose a file and submit it, it should say 'please choose a file.
can you explain me HOW to solve my issues and WHY are these things happening?
<?php
if (isset($_POST['submit'])){
$size=$_FILES['file']['size'].'kb'."<br>";
$name=$_FILES['file']['name']."<br>";
$type=$_FILES['file']['type']."<br>";
$tmp_name=$_FILES['file']['tmp_name']."<br>";
if (isset($name))
{
if(!empty($name))
{
$location='uploads/';
if (move_uploaded_file($tmp_name,$location.$name))
{
echo 'UPLOADED';
}
echo 'OK.';
}else
{
echo 'please choose a file.';
}
}
}
?>
<form action="upload.php" method="POST" enctype="multipart/form-data">
<br>
<input type ="file" name="file">
<br> <br>
<input type="submit" name="submit" value ="Submit">
</form>
<?php
echo 'File size: '.$size;
echo 'File name: '.$name;
echo 'File type: '.$type;
//echo 'File temporary place: '.$tmp_name;
?>
PS: this is a screenshot from page after just hit the refresh button
I

Answer 1

Here you go, using the file error value. Values will be 0 to 8 for different issues: http://php.net/manual/en/features.file-upload.errors.php
if (isset($_POST['submit'])){
if ($_FILES["file"]["error"]==0){ //success so far
$size=$_FILES['file']['size'];
$name=$_FILES['file']['name'];
$type=$_FILES['file']['type'];
$tmp_name=$_FILES['file']['tmp_name'];
$location='uploads/';
try{
$result = move_uploaded_file($tmp_name,$location.$name); // this will throw warnings though!
if($result){
echo 'UPLOADED AND MOVED';
}else{
echo "Unable to move the file";
}
}catch(Exception $e){
echo "Sorry there was a problem ".$e.getMessage();
}
}else{ //some sort of problem
echo "There was a problem with the upload (error code: ".$_FILES["file"]["error"].")";
if($_FILES["file"]["error"]==4 ){ // UPLOAD_ERR_NO_FILE
echo "<br/> Please choose a file to upload";
}
}
}
Make sure that your uploads folder exists and the permissions are set correctly. Display the correct errors may help.