PHP Sample For Multiple Chunk Upload

This sample does multi-chunked uploading.
Before you try this code, make sure you have installed PHP cURL,
This sample uses FileCloud APIs "loginguest" and "upload".
This code can be used to upload large files, splitting them into 20MB chunks.
The following sample reads a file named sample.mp4 and uploads it into FileCloud as sample.mp4
<?php

    function create_upload_form_for_datachunk($data) {
    $headers = array();
    $form[] = implode("\r\n", array(
        "Content-Disposition: form-data; name=\"filedata\"; filename=\"blob\"",
        "Content-Type: application/octet-stream",
        "",
        $data
    ));

    // generate safe boundary
    do {
        $boundary = "---------------------" . md5(mt_rand() . microtime());
    } while (preg_grep("/{$boundary}/", $form));

    // add boundary for each parameters
    array_walk($form, function (&$part) use ($boundary) {
        $part = "--{$boundary}\r\n{$part}";
    });

    // add final boundary
    $form[] = "--{$boundary}--";
    $form[] = "";

    // set options
    $headers[] = "Content-Type: multipart/form-data; boundary={$boundary}";
    return array($headers, $form);
}

$cookie_jar = tempnam('C:\\testfolder', 'cookie');

// Input Options
$username = "testuser";
$password = "password123";
$serverurl = "https://127.0.0.1";
$pathval = "/testuser/folder";
$filename = 'sample.mp4'; // name of the file to upload
$filefullpath = 'C:\\testfolder\\'.$filename; // Full path to file to upload
//assign post data
$param = array('userid' => $username, 'password' => $password);

//login to the site
$api = "loginguest";
$url = $serverurl . "/core/" . $api;
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $param);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$data = curl_exec($ch);
curl_close($ch);
//end of login

$xmlstr = new \SimpleXMLElement($data);
$result = $xmlstr->command->result;
if ($result == 1) {
    echo "Profile Logged in Successfully";

    //upload api call
    $api = "upload";
    $appnamevalue = "explorer";
    $pathvalue = $pathval;


    //creating a single shot upload call
    $offset = 0;
    $complete = '0';
    $file_sz = filesize($filefullpath);
    $chunk_sz = 20000000; //20MB chunks

    while($offset < $file_sz) {
        if(($offset + $chunk_sz) >= $file_sz) {
            $complete = '1';
            $sz = $file_sz - $offset;
        } else {
            $sz = $chunk_sz;
        }

        $data = file_get_contents($filefullpath, FALSE, NULL, $offset, $sz);
        $tt = strlen($data);
        list($headers, $form) = create_upload_form_for_datachunk($data);

        $url= $serverurl."/core/upload?appname=explorer" . '&path=' . $pathval . '&offset=' . $offset . '&complete='
            . $complete. '&filename=' . $filename;

        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, implode("\r\n", $form));
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
        curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        $result = curl_exec($ch);
        curl_close($ch);

        if ($result != "OK") {
            echo "Failed to upload\n";
            exit;
        }

        $offset = $offset + $chunk_sz;
    }



    if ($result == "OK") {
        echo "</br>" . "File uploaded Successfully";
    } else {
        echo $result;
    }
} else {
    echo "Error:" . $xmlstr->command->message;
}