son hali bu oldu
<div class="col-md-12">
<div class="form-group col-md-6">

<label>Manşet</label><br>
<?php
$manset = $db->query("SELECT manset FROM haberler WHERE id=1", PDO::FETCH_ASSOC);
if ( $manset->rowCount() ){
foreach( $manset as $row ){
print $row['manset']."<br />";
}
}

?>

<input type="radio" name="manset" value="0" <?php if($manset==0){ ?> checked="checked" <?php } ?>> <b style="color:red;">Bu haber manşette görünmesin.</b><br>
<input type="radio" name="manset" value="1" <?php if($manset==1){ ?> checked="checked" <?php } ?>> <b style="color:green;">Bu haber manşette görünsün.</b>

</div>
</div>
çıkan hatalar

Notice: Object of class PDOStatement could not be converted to int in C:\wamp\www\haber\template\admin\haber-guncelle.php on line 106

Notice: Object of class PDOStatement could not be converted to int in C:\wamp\www\haber\template\admin\haber-guncelle.php on line 107