PHP 5.4 introduce a new feature to track file upload. this feature is
$_SESSION upload_progress.
We have to enable it via php.ini.
Though I can't find any place in my php.ini to enable this option. What's the problem?
My php version is 5.4.
You need to add these params to your php.ini file.
session.upload_progress.enabled = on
session.upload_progress.prefix = "upload_progress_"
session.upload_progress.name = "blabla"
Check this <form>
<form action="upload.php" method="POST" enctype="multipart/form-data">
<input type="hidden" name="<?php echo ini_get("session.upload_progress.name"); ?>" value="blabla" />
<input type="file" name="file1" />
<input type="file" name="file2" />
<input type="submit" />
</form>
and on your PHP..
<?php
$_SESSION["upload_progress_blabla"] = array(
"start_time" => 1234567890, // The request time
"content_length" => 57343257, // POST content length
"bytes_processed" => 453489, // Amount of bytes received and processed
"done" => false, // true when the POST handler has finished, successfully or not
"files" => array(
This is a mixture of information and taken from PHP Manual as well. You need to check out that seriously.