All you need to do is set 'enctype'=>'multipart/form-data' and make sure the name of fields are same in both form and the action page.

If you want to do it the elgg way:

$form_body = elgg_view('input/file', array(

'name' => 'upload'

));

$form_body .= elgg_view('input/submit', array(

'value' => 'Upload Now'

));

echo elgg_view('input/form', array(

'body' => $form_body,

'enctype' => 'multipart/form-data',

'action' => 'action/myfileupload'

));

--------------------------

In your init function in start.php you need to register an action:

elgg_register_action('myfileupload', elgg_get_plugins_path() . 'myplugin/actions/myfileupload.php');

--------------------------

Create an action to process the uploaded file (it's accisble via $_FILES['upload']) in myplugin/actions/myfileupload.php.

If you need to save the file in elgg data folder, you will need to define a new ElggFile. Look into files plugin for examples

Thats the full code you need to use. The previous post was made expecting you have coded the basic framework.

I am trying to implement this given code in my elgg test site as i need a upload file provision inside a form, every thing else is ok but code below display's 'EMPTY'.

if(!empty($_FILES['upload'])){system_message(' NOT EMPTY');}

else{system_message('EMPTY');}

Any ideas what could be the reason behind this?

Thank you in advance.

If you do error_log(print_r($_FILES['upload'), true); you will see that it's not empty. If you have included the file input in your form, $_FILES will not be empty. Use $_FILES['upload]['error'] instead.

Thank you for your quick reply but i am still not able to figure it out as what is the problem

upload.php (form file)

-----------------------------------------------------

<?php
$form_body = '<input type="file" name="upload" id="upload"/>';

$form_body .= elgg_view('input/submit', array(

'value' => 'Upload Now'

));
echo elgg_view('input/form', array(

'body' => $form_body,

'enctype' => 'multipart/form-data',

));
?>

-----------------------------------------------------

upload.php (action file) [code snippet form http://www.w3schools.com/php/php_file_upload.asp]

-----------------------------------------------------

<?php
if ($_FILES["upload"]["error"] > 0)
  {
  echo "Error: " . $_FILES["upload"]["error"];
  }
else
  {
  echo "Upload: " . $_FILES["upload"]["name"];
  echo "Type: " . $_FILES["upload"]["type"];
  echo "Size: " . ($_FILES["upload"]["size"] / 1024)."Kb";
  echo "Stored in: " . $_FILES["upload"]["tmp_name"];
  }
?>

Can you please take a look at the code and let me know if everything i am doing is ok or do i need some changes.

Thank you once agian

Every thing in else block shows blank as output

updated action file

if($_FILES['upload']['error']>0)
{
register_error('Error');
}
else
{
$info = pathinfo($_FILES['upload']['name']);
$ext = $info['extension'];
$newName = "projectTest.".$ext;
$target = elgg_get_plugins_path().'project/roles/user/pFile/33/'.$newName;
move_uploaded_file( $_FILES['upload']['tmp_name'], $target);
}

no file is at given target.......i will update if can find any solutions

This is what i found in my error log file related to my action file

PHP WARNING: 2013-10-07 18:58:38 (UTC): "error_log() [<a href='function.error-log'>function.error-log</a>]: Failed to connect to mailserver at &quot;localhost&quot; port 25, verify your &quot;SMTP&quot; and &quot;smtp_port&quot; setting in php.ini or use ini_set()" in file C:\\wamp\\www\\Elgg_for_testing_purposes\\elgg-1.8.16\\mod\\project\\actions\\project\\upload.php (line 21)