If the file in __autoload has a Syntax Error, then the script stops without show a message

Answer 1

Shows the error for me:

class ClassName
{
    public function __construct()
    {
        $line = $error
        echo 'Contructor' . "\n";
    }
}

Output:

Before load...
Parse error: syntax error, unexpected T_ECHO in ClassName.php on line 8

See Fanis' comment.