为什么找不到div？ （simple_html_dom）

Question

I have this code:

<?php
//Include simple_html_dom.php
include('simple_html_dom.php');

//Get function and variable for Webpage
$Flightnumber = '**********';
$firstprelink = '*********************************';
$secondprelink = $Flightnumber;
$fulllink = $firstprelink.$secondprelink;
$html = file_get_html($fulllink, false);
$firstone = $html->find("div[id=********]");
echo $firstone;
?>

Why doesn´t it work ? It should display the div´s of the page. On other webpages it works and when I echo only $html it works fine too. I don´t understand. It just ouputs this:

Notice: Array to string conversion in C:\xampp\htdocs\Sofort-Flug-Entschädigung\simpletest3.php on line 17 Array

Answer 1

So the Solution:

For some unkown reason I needed to find the div/tag I was searching for by counting it:

$firstone = $html->find('div');
$secondone = $firstone[2];

Further: echo; did not work so I used "print();".

That´s it, so:

1) Find tag by counting. 2) Print, don´t echo.

print($secondone);