Untitled


<?php
ini_set('error_reporting', E_ALL);
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);

$buffer = '<html lang="en">
<head>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <script src="//cdnjs.cloudflare.com/ajax/libs/jquery.form/4.2.2/jquery.form.min.js"></script>
    <script>
        $(document).ready(function() {
            $(".myform").ajaxForm({target: \'.preview\'}).submit();
        });
    </script>
</head>
<body>
    <div class="preview"></div>
    <form action="" enctype="multipart/form-data" class="myform" method="post">
        <input type="file" name="suka">
        <input type="submit">
    </form>
</body>';

function str_random($length = 10) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}

$myfilename = str_random(10);
//$myfilename = 'F6BX6SdISt';

if(!empty($_FILES['suka']['tmp_name'])) {
    $filename      = $_FILES['suka']['name'];
    $file_basename = substr($filename, 0, strripos($filename, '.')); // get file name
    $file_ext      = substr($filename, strripos($filename, '.')); // get file extension
    $filesize      = $_FILES['suka']["size"];
    $uploads_dir = __DIR__.'/uploads/';
    if (is_uploaded_file($_FILES['suka']['tmp_name'])) {
        move_uploaded_file($_FILES['suka']['tmp_name'], $uploads_dir.$myfilename.$file_ext);
    }
    else if (empty($file_basename)) {
        $buffer .= '<span style="color:red">empty</span>';
    }
    else if ($filesize > 52428800) { //50mb
        $buffer .= '<span style="color:red">bigger</span>';
    }
    else {
        $buffer .= '<span style="color:red">untype</span>';
        //unlink($_FILES["file"]["tmp_name"]);
    }
}

$buffer .= "<br>POST: <pre>";
$buffer .= print_r($_POST,true).PHP_EOL;
$buffer .= "</pre><br>FILES:<pre>";
$buffer .= print_r($_FILES,true);
$buffer .= "</pre>";
$buffer .= '
<script>
    function err(errtext) {
        alert(errtext);
    }
</script>
</html>';

echo $buffer;
?>