irishmann

$filename = $_FILES["filename"]["name"];
move_uploaded_file($_FILES["filename"]["tmp_name"], "avatar/$filename");
$query = $connection->prepare("UPDATE table_user SET avatar = :avatar WHERE user_id = :user_id");
$query->bindParam(':avatar', $filename);
$query->bindParam(':user_id', $user_id);
$query->execute();

echo '<img src="data:image/png;base64,' . base64_encode($blob) . '" alt="base64_image" />';

var a = 1,x; // a = 1
x = 
++a // a = 2 
+ 
++a; // a = 3
// x = 5, x = 2 + 3
// a = 3, последняя операция ++a

x +=a; // x = 8, x = 5 + 3

console.log(x); //8

$options = array(
  'safe_mode'=>true,
  'open_basedir'=>'/var/www/users/jdoe/',
  'allow_url_fopen'=>'false',
  'disable_functions'=>'exec,shell_exec,passthru,system',
  'disable_classes'=>'myAppClass');
$sandbox = new Runkit_Sandbox($options);

$sandbox->ini_set('html_errors',true);

// ...

$sandbox->eval('var_dump(isset($foo));');