dediğini denedimde hata veriyor hocam ya



<?php
if(isset($_POST["botsiteler"])){

$list = array(explode(" ", $_POST["botsiteler"]));

foreach($list as $url) {
$html = file_get_html($url);
foreach($html->find('body') as $content) {
$body = $html->find('body', 0);
$sonuc = $body->plaintext;
}
echo $sonuc . "<br><br>";
}
}
?>

<form method="post" action="<?php echo $_SERVER["PHP_SELF"];?>">

<label for="botlabel">Kazılacak Siteler:</label><br><br>

<textarea id="botsiteler" name="botsiteler" rows="10" cols="80">www.google.com,www.facebook.com</textarea><br><br>

<input type="submit" value="Submit">
</form>