man.php

<?php

$servername = "localhost";
$username = "root";
$password = "";
$dbname="upload_data";

// Create connection
$conn = new mysqli($servername, $username, $password,$dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";


if(isset($_FILES['files'])){
    $errors= array();
    foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){

        $file_name = $key.$_FILES['files']['name'][$key];
        $file_size =$_FILES['files']['size'][$key];
        $file_tmp =$_FILES['files']['tmp_name'][$key];
        $file_type=$_FILES['files']['type'][$key];
        if($file_size > 2097152){
            $errors[]='File size must be less than 2 MB';
        }
        $query="INSERT into upload_data (`FILE_NAME`,`FILE_SIZE`,`FILE_TYPE`) VALUES('$file_name','$file_size','$file_type'); ";
        $desired_dir="user_data";
        if(empty($errors)==true){
            if(is_dir($desired_dir)==false){
                mkdir("$desired_dir", 0700);		// Create directory if it does not exist
            }
            if(is_dir("$desired_dir/".$file_name)==false){
                move_uploaded_file($file_tmp,"user_data/".$file_name);
            }else{
                //rename the file if another one exist
                $new_dir="user_data/".$file_name.time();
                rename($file_tmp,$new_dir) ;
            }
            mysql_query($query);
        }else{
            print_r($errors);
        }
    }
    if(empty($error)){
        echo "Success";
    }
}
?>
<form action="" method="POST" enctype="multipart/form-data">
    <input type="file" name="files[]" multiple="" />
    <input type="submit"/>
</form>