PHP: file_exist errors preventing show entire page

Question

I got an error when handling a not seated avatar image, 0.jpg is a default user avatar and every user had an avatar called firstname_lastname.jpg

<?php  
$uname_ = 'John_Doe';  
$avname = "media/avatars/" . $uname_ . '.jpg';
  if(file_exists($avname) { 
    $avatar = $uname_ ;
  } else { 
    $avatar = "0" ;
  }
?>
<img src="media/avatars/<?php echo $avatar ?>.jpg">

This does't work, and is preventing the page to show. I get a blank response.

Answer 1

you got this

if(file_exists($avname) {

need this

if(file_exists($avname)) {