用PHP上传文件问题

Question

I have made an upload image a couple times before and I never have problems. And I just copy the script and it worked fine, but after I copy I don't know why it keep shows that I'm not using the right extension. Can you spot the mistake?

This is the form script:

<tr height="30">
        <td>&nbsp;</td>
        <td align="right">Gambar Barang &nbsp;&nbsp;&nbsp;</td>
        <td><input type="file" name="gambar" /></td>
</tr>

and its the action,

$errors= array();
$uploaddir = 'images/';
$uploadfile = $uploaddir . basename($_FILES['gambar']['name']);
$gambar      = $_FILES['gambar']['name'];
$gambar_size     = $_FILES['gambar']['size'];
$gambar_type     = $_FILES['gambar']['type'];
$gambar_tmp      = $_FILES['gambar']['tmp_name'];
$gambar_ext=strtolower(end(explode('.',$_FILES['gambar']['name'])));

 $expensions= array("jpeg","jpg","png");

  if(in_array($gambar_ext,$expensions)=== false){
     $errors[]="extension not allowed, please choose a JPEG or PNG file.";
  }

  if($gambar_size > 4097152){
     $errors[]='File size must be excately 4 MB';
  }

  if(empty($errors)==true){
     copy($_FILES['gambar']['tmp_name'], $uploadfile);

  }else{
     print_r($errors);
  }

Answer 1

There are several things that could cause file upload to fail:

• does the upload form have enctype="multipart/form-data"?
• is file_uploads = On in php.ini?
• what is the max post/upload limit in php.ini?
• did you check the permissions for the upload folder?