validation image not detect - php

Question

I have Code to Create/Update/Delete my data from database.
I have data and a banner image. I do not want to update the image if only the data is set.
So, I try to make a code validator: if I update only data -not the image- my image is not set to null.
But my validation does not detect if I have filled my input file or not...
This my code:
<?php
include ("config.php");
$id= $_POST['id'];
$konten3 = $_POST['konten3'];
$footer=$_POST['footer'];
$lokasi_file = $_FILES['banner']['tmp_name'];
$nama_file = $_FILES['banner']['name'];
if(isset($_FILES['banner'])) {
$hapus = mysql_query("SELECT * FROM newsletter WHERE id='$id'");
$r=mysql_fetch_array($hapus);
$d = 'upload/'.$r['banner'];
unlink ($d);
move_uploaded_file($lokasi_file,"upload/".$nama_file);
}if (empty($lokasi_file)) {
if ($edit = mysql_query("UPDATE newsletter SET konten3='$konten3', footer='$footer' WHERE id='$id'")){
header("Location: newsletter.php");
exit();
}
die ("Terdapat kesalahan : ". mysqli_error($konek));
}
if ($edit = mysql_query("UPDATE newsletter SET banner='$nama_file', konten3='$konten3',footer='$footer' WHERE id='$id'")){
header("Location: newsletter.php");
exit();
}
die ("Terdapat kesalahan : ". mysql_error($konek));
?>
I am so happy if anyone can help me. i am try to update image with name banner

Answer 1

Issue is in your conditions and in last query. i think in last update you dont need to update image. change your code as below
<?php
include ("config.php");
$id= $_POST['id'];
$konten3 = $_POST['konten3'];
$footer=$_POST['footer'];
$lokasi_file = $_FILES['banner']['tmp_name'];
$nama_file = $_FILES['banner']['name'];
if(isset($_FILES['banner']) && $_FILES['banner']['name'] != "") {
$hapus = mysql_query("SELECT * FROM newsletter WHERE id='$id'");
$r=mysql_fetch_array($hapus);
$d = 'upload/'.$r['banner'];
unlink ($d);
move_uploaded_file($lokasi_file,"upload/".$nama_file);
}
if (!empty($lokasi_file)) { //change here need to check "not empty" instead of "empty"
if ($edit = mysql_query("UPDATE newsletter SET banner='$nama_file',konten3='$konten3', footer='$footer' WHERE id='$id'")){
header("Location: newsletter.php");
exit();
}
die ("Terdapat kesalahan : ". mysqli_error($konek));
}
//Remove banner from below query
if ($edit = mysql_query("UPDATE newsletter SET , konten3='$konten3',footer='$footer' WHERE id='$id'")){
header("Location: newsletter.php");
exit();
}
die ("Terdapat kesalahan : ". mysql_error($konek));
?>
EDIT
Change your logic as below if banner is uploaded then move and update banner otherwise only update other data
<?php
include ("config.php");
$id= $_POST['id'];
$konten3 = $_POST['konten3'];
$footer=$_POST['footer'];
$lokasi_file = $_FILES['banner']['tmp_name'];
$nama_file = $_FILES['banner']['name'];
if(isset($_FILES['banner']) && $_FILES['banner']['name'] != "") {
$hapus = mysql_query("SELECT * FROM newsletter WHERE id='$id'");
$r=mysql_fetch_array($hapus);
$d = 'upload/'.$r['banner'];
unlink ($d);
move_uploaded_file($lokasi_file,"upload/".$nama_file);
if ($edit = mysql_query("UPDATE newsletter SET banner='$nama_file',konten3='$konten3', footer='$footer' WHERE id='$id'")){
header("Location: newsletter.php");
exit();
}
die ("Terdapat kesalahan : ". mysqli_error($konek));
}
//Remove banner from below query
if ($edit = mysql_query("UPDATE newsletter SET , konten3='$konten3',footer='$footer' WHERE id='$id'")){
header("Location: newsletter.php");
exit();
}
die ("Terdapat kesalahan : ". mysql_error($konek));
?>