Simple upload file

Simple upload file

$file=''; 
if(isset($_FILES['img']) AND $_FILES["img"]['size']<=10000000 AND $_FILES["img"]['size']>100){
    $folder = '../images/blog/';
    $tmp_name = $_FILES["img"]["tmp_name"];
    $name = $_FILES["img"]["name"];
    $img = pathinfo($_FILES["img"]['name']);
    $file = "blog_".rand(0,999999).$name;
    move_uploaded_file($tmp_name, $folder.$file);
}