Please help me with the Notice: Undefined index: image error in the $ post_image and $ post_image_tmp variables. What's wrong?

I want the data in the fields of the form that I retrieved from the table update. How can I fix the error?

if(isset($_POST['update_post'])){ $post_author = $_POST['post_author']; $post_title = $_POST['post_title']; $post_category_id = $_POST['post_category_id']; $post_status = $_POST['post_status']; $post_image = $_FILES['image']['name']; $post_image_temp = $_FILES['image']['tmp_name']; $post_content = $_POST['post_content']; $post_tags = $_POST['post_tags']; move_uploaded_file($post_image_temp, "../images/$post_image"); $query = "UPDATE posts SET"; $query .= "post_title = '{$post_title}', "; $query .= "post_category_id = '{$post_category_id}', "; $query .= "post_date = now(), "; $query .= "post_author = '{$post_author}', "; $query .= "post_status = '{$post_status}', "; $query .= "post_tags = '{$post_tags}', "; $query .= "post_content = '{$post_content}', "; $query .= "post_image = '{$post_image}' "; $query .= "WHERE post_id = {$the_post_id} "; $update_post = mysqli_query($connection, $query); // confirm($update_post); } ?> <form action="" method="post" enctype="multipart/form-data"> <div class="form-group"> <label for="title">Post Title</label> <input type="text" value="<?php echo $post_title; ?>" class="form-control" name="post_title"> </div> <div class="form-group"> <select name="post_category_id" id=""> <?php $query = "SELECT * FROM categories"; $select_categories = mysqli_query($connection, $query); //// confirm($select_categories); while($row = mysqli_fetch_assoc($select_categories)){ $cat_id = $row['cat_id']; $cat_title = $row['cat_title']; echo "<option value='$cat_id'>{$cat_title}</option>"; } ?> </select> </div> <div class="form-group"> <label for="author">Post Author</label> <input type="text" value="<?php echo $post_author; ?>" class="form-control" name="post_author"> </div> <div class="form-group"> <label for="post_status">Post Status</label> <input value="<?php echo $post_status; ?>" type="text" class="form-control" name="post_status"> </div> <div class="form-group"> <img width="300" src="../images/<?php echo $post_image; ?>" alt="" > </div> <div class="form-group"> <label for="post_tags">Post Tags</label> <input value="<?php echo $post_tags; ?>" type="text" class="form-control" name="post_tags"> </div> <div class="form-group"> <label for="post_content">Post Content</label> <textarea class="form-control" name="post_content" id="" cols="30" rows="10"> <?php echo $post_content; ?> </textarea> </div> <div class="form-group"> <input type="submit" class="btn btn-primary" name="update_post" value="Update Post"> </div> </form>

    1 answer 1

    Either I do not see, or you do not have input `a in the form that accepts this very picture. Therefore, the variable is empty.

     //что бы добавить нужен инпут <input name="image" type="file" />