/admin/js/redactor/image_upload.php

<?php

// This is a simplified example, which doesn't cover security of uploaded images.
// This example just demonstrate the logic behind the process.


// files storage folder

$dir = "../../../public/images/uploads/";

$_FILES['file']['type'] = strtolower($_FILES['file']['type']);

if ($_FILES['file']['type'] == 'image/png'
|| $_FILES['file']['type'] == 'image/jpg'
|| $_FILES['file']['type'] == 'image/gif'
|| $_FILES['file']['type'] == 'image/jpeg'
|| $_FILES['file']['type'] == 'image/pjpeg')
{
    // setting file's mysterious name
    $file = $dir.md5(date('YmdHis')).'.jpg';

    // copying
    copy($_FILES['file']['tmp_name'], $file);

    // $file = substr($file, 6);
    // displaying file
    $fileshow = 'http://184.72.221.135/images/uploads/'.str_replace($dir, '', $file);
    $array = array(
    	'filelink' => $fileshow
    );

    echo stripslashes(json_encode($array));

}