Как сделать добавление картинок на php?

<?php
 
if(isset($_POST["upload"])) {
    if(file_exists($_FILES["image"]["tmp_name"])) {
        $type = array('image/jpg', 'image/jpeg', 'image/png', 'image/gif');
        if(in_array($_FILES["image"]["type"], $type)) {
            if($_FILES["image"]["size"] <= (1024 * 1024 * 2)) {
                $dir = 'images/';
                $dir = $dir . md5(uniqid() . $_FILES["image"]["name"]) . '.jpg';
                if(move_uploaded_file($_FILES["image"]["tmp_name"], $dir))
                    $result_message = '<div class="success">Success!</div>';
                else
                    $result_message = '<div class="error">Error!</div>';
            }else{
                $result_message = '<div class="error">The image should not be larger than 2 MB!</div>';
            }
        }else{
            $result_message = '<div class="error">The format is not correct!</div>';
        }
    }else{
        $result_message = '<div class="error">Image not found!</div>';
    }
}
 
?>
 
<style type="text/css">
.success {margin-bottom: 9px;padding: 2px 9px;border: 1px solid rgba(138,208,80,1);background-color: rgba(138,208,80,0.1);}
.error {margin-bottom: 9px;padding: 2px 9px;border: 1px solid rgba(255,0,0,1);background-color: rgba(255,0,0,0.1);}
</style>
 
<?=(isset($result_message)) ? $result_message : ''?>
<form action="" method="post" enctype="multipart/form-data">
    <input type="file" name="image" />
    <input type="submit" name="upload" value="Upload" />
</form>