PHP-MySQL如何在用户提交新图像问题时删除图像

Question

I'm trying to delete the current image that is already set on the server when a user submits a new image to the server, but I don't know how to do add this to my current code can some one please help me?

Here is my PHP & MySQL code.

if(isset($_FILES["thumb"]["name"])) { 

  if (file_exists("/images/" . $_FILES["thumb"]["name"])) {

    $thumb != $_FILES["thumb"]["name"];

  } else if($_FILES["thumb"]["name"] == TRUE) {

    move_uploaded_file($_FILES["thumb"]["tmp_name"],
      "/images/" . mysqli_real_escape_string($mysqli, htmlentities(strip_tags(basename($_FILES["thumb"]["name"])))));
    $thumb = mysqli_real_escape_string($mysqli, htmlentities(strip_tags(basename($_FILES["thumb"]["name"]))));

  } 

  if($thumb == TRUE) {
    //create thumb code here...
  }

}

Answer 1

use below code

$filename=$_FILES['thumb']['name'];  
$oldimage='23.png'

if ((file_exists("thumb/".$oldimage))  && ($oldimage!=$filename)) {
    unset($oldimage);
  }

replace your if condition with above code inside if(isset(...){ 'here'

}