insert post

<html>

<head>
  <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>insert new post</title>
    <!-- Bootstrap -->
    <link href="layout/css/bootstrap.min.css" rel="stylesheet">
    <!-- Plugins Style -->
    <link href="layout/css/style-plugins.css" rel="stylesheet">
    <!-- Font Awesome -->
    <link href="layout/css/font-awesome.min.css" rel="stylesheet">
    <!-- Style -->
    <link href="layout/css/style.css" rel="stylesheet">
    <!-- Style -->
    <link href="layout/css/admin-style.css" rel="stylesheet">
</head>

<body>

    <div class="container insert_post_page">
        <div class="row">

            <h2 class="text-center insert_post_title">إضافة موضوع جديد</h2>

            <form method="post" action="insert_post.php" enctype="multipart/form-data">
                <div class="form-horizontal">

                    <div class="groupe-form">
                        <label for="post_title" class="col-sm-2 control-label">عنوان الموضوع</label>
                        <div class="col-sm-10">
                          <input type="text" name="title" class="form-control" id="post_title" placeholder="عنوان الموضوع">
                        </div>
                    </div>

                    <div class="groupe-form">
                        <label for="post_author" class="col-sm-2 control-label">الكاتب</label>
                        <div class="col-sm-10">
                          <input type="text" name="author" class="form-control" id="post_author" placeholder="اسم الكاتب">
                        </div>
                    </div>

                    <div class="groupe-form">
                        <label for="post_keywords" class="col-sm-2 control-label">الكلمات المفتاحية</label>
                        <div class="col-sm-10">
                          <input type="text" name="keywords" class="form-control" id="post_keywords" placeholder="ادخل الكلمات المفتاحية">
                        </div>
                    </div>

                    <div class="groupe-form">
                        <label for="post_image" class="col-sm-2 control-label">صورة الموضوع</label>
                        <div class="col-sm-10">
                          <input type="file" name="image" class="form-control form-image-insert" id="post_image" placeholder="ادخل الكلمات المفتاحية">
                        </div>
                    </div>

                    <div class="groupe-form form-content-insert">
                        <label for="post_content" class="col-sm-2 control-label">نصّ الموضوع</label>
                        <div class="col-sm-10">
                          <textarea type="text" name="content" class="form-control" id="post_content" placeholder="أكتب نص الموضوع هنا" rows="20"></textarea>
                        </div>
                    </div>

                    <div class="col-md-6 pull-right col-md-pull-2 form-insert-submit">
                    <input type="submit" name="submit" class=" btn btn-default"  value="أرسل الموضوع">
                    </div>

                </div>
            </form>

            <!-- Start Zone Php isset -->
            <div class="pull-left col-sm-10 post-insert-zone-php">
            <?php

            include "../includes/connect.php";

            if (isset($_POST['submit']))
            {

                $post_title = $_POST['title'];
                $post_date = date("d-m-y",date_default_timezone_set('Africa/Algiers'));
                $post_author = $_POST['author'];
                $post_keywords = $_POST['keywords'];
                $post_content = $_POST['content'];
                $post_image = $_FILES['image']['name'];
                $image_tmp = $_FILES['image']['tmp'];


                if (empty($post_title))
                {
                    echo '<div class="alert alert-danger" role="alert">الرجاء إدخال عنوان الموضوع</div>';
                }elseif(empty($post_author))
                {
                    echo '<div class="alert alert-danger" role="alert">الرجاء إدخال اسم الكاتب</div>';
                }elseif(empty($post_keywords))
                {
                    echo '<div class="alert alert-danger" role="alert">الرجاء إدخال الكلمات المفتاحية</div>';
                }elseif(empty($post_keywords))
                {
                    echo '<div class="alert alert-danger" role="alert">الرجاء كتابة نصّ الموضوع</div>';
                }elseif(empty($post_keywords))
                {
                    echo '<div class="alert alert-danger" role="alert">الرجاء اختيار صورة للموضوع</div>';
                }else{
                    move_uploaded_file($image_tmp,"images/$post_image");


                $insert_query = ("$conn, 'INSERT INTO  `posts`
                (`post_title` , `post_date` , `post_author` , `post_image` , `post_keywords` , `post_content`) VALUES ( `$post_title`, `$post_date`, `$post_author`, `$post_image`, `$post_keywords`, `$post_content`)'" );

                if(mysqli_query($insert_query))
                {
                   echo '<div class="alert alert-success" role="alert">تمّ إرسال الموضوع بنجاح</div>';
                }

                }



            }

            ?>
            </div>
            <!-- End Zone Php isset -->

        </div>
    </div>

</body>

</html>