alternate to upload image or not - php

Question

I am new in stackoverflow and in PHP too, so I want to describe my problem first. Sorry if I have bad grammar, I am not native though.
I make a form that let user post (to database) with or without an image, this the code
$link = mysqli_connect('localhost', 'root', '12345!##', 'pklapps') or die("Couldnt connect to the server");
//public info dari admin
if (isset($_POST["title"]) && isset($_POST["content"]) && isset($_POST["category"])) {
$title = $_POST['title'];
$desc = $_POST['content'];
$lat = $_POST['latitude'];
$long = $_POST['longitude'];
$category = $_POST['category'];
$image = $_POST['userfile'];
if (!isset($_FILES['userfile'])) {
$query = "INSERT INTO public_info (title, content, category) VALUES ('$title','$desc','$category')";
$result = mysqli_query($link, $query);
if ($result) {
header('Location: post.php?success');
} else {
header('Location: post.php?error');
}
} else {
$fileName = $_FILES['userfile']['name'];
$target = "uploads/";
$fileTarget = $target.$fileName;
$tempFileName = $_FILES["userfile"]["tmp_name"];
$result = move_uploaded_file($tempFileName,$fileTarget);
/*
* If file was successfully uploaded in the destination folder
*/
if ($result) {
header('Location: post.php?success');
$query = "INSERT INTO public_info (title, content, category, imagePath) VALUES ('$title','$desc','$category', '$fileTarget')";
$link->query($query) or die("Error : ".mysqli_error($link));
} else {
header('Location: post.php?errimg');
}
mysqli_close($link);
}
}
and the form goes normal when i attach the image or file but it goes to header('Location: post.php?errimg'); when i not attach the image. Please help me with this, thank you.

Answer 1

Replace your if condition from !isset($_FILES['userfile']) to empty($_FILES['userfile']['name'])
//if (!isset($_POST[]))
$title = $_POST['title'];
$desc = $_POST['content'];
$lat = $_POST['latitude'];
$long = $_POST['longitude'];
$category = $_POST['category'];
$image = $_POST['userfile'];
if(empty($_FILES['userfile']['name'])) {
$query = "INSERT INTO public_info (title, content, category) VALUES ('$title','$desc','$category')";
$result = mysqli_query($link, $query);
if ($result) {
header('Location: post.php?success');
}
else {
header('Location: post.php?error');
}
}
else {
$fileName = $_FILES['userfile']['name'];
$target = "uploads/";
$fileTarget = $target.$fileName;
$tempFileName = $_FILES["userfile"]["tmp_name"];
$result = move_uploaded_file($tempFileName,$fileTarget);
/*
* If file was successfully uploaded in the destination folder
*/
if($result) {
header('Location: post.php?success');
$query = "INSERT INTO public_info (title, content, category, imagePath) VALUES ('$title','$desc','$category', '$fileTarget')";
$link->query($query) or die("Error : ".mysqli_error($link));
}
else {
header('Location: post.php?errimg');
}
mysqli_close($link);
}
// $query = "INSERT INTO public_info (title, content, category) VALUES ('$title','$desc','$category')";
} ?>