thanks I have error upload avatar the charge but from error
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$current = "./img/avatars/avatar_'.$id.'.png";
unlink($current); <------------------------------- error
$allowedExts = array("gif", "jpeg", "jpg", "png");
$extension = end(explode(".", $_FILES["file"]["name"])); <----------------------------------- error
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 200000)
&& in_array($extension, $allowedExts)){
if ($_FILES["file"]["error"] > 0){
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
}else{
move_uploaded_file($_FILES["file"]["tmp_name"],
"img/avatars/" . $_FILES["file"]["name"]);