set default image for input filed with php

Question

This is the part of my HTML tags
<input type="file" name="file" accept="image/*"/><br><br>
I want to put a default image for this field. The name of the image is default-avatar.jpeg I have written this code:<br>

if (isset($_POST["file"])){
$file = addslashes($_POST["file"]);
echo "Yes<br>";
}
elseif(empty($_POST['file'])){
$file = "default-avatar.jpeg";
echo "No<br>";
}
So I suggested when the user chooses another file, the value of the $file variable gets another value, when the user doesn't choose file, the value of $file stays default-avatar.jpeg

But the value of the file field is never empty. When I tried to echo it has always some value. If the user chooses another file, the value of $file variable is that file, but when he doesn't the value is nothing (I thought it is empty). So the isset($_POST["file"]) is always True. How can I solve this?

Answer 1

Do this-

$image=$_POST['file'];
if(empty($image)){
$image="default-avatar.jpeg";
}

I tried, it is working perfectly 😉

Answer 2

@Sachin Artani
This code doesn't work properly, because the value of the image field is never empty. So the value of the image variable is always "default-avatar.jpeg". Can you give me a link in which you have referred this code. Thank you.