Question

I can’t load all websites inside my iframe for example youtube, facebook and twitter.
I load all my pages from my database, other websites do load normal.

i tried:

js:

function showeffect(sUrl,sName)
    {

        $('#effect').hide(1000);
        $('#effect').show(2200);
        $('#website').attr("src", sUrl);

    }

php:

        <?php 


            $sql = "SELECT naam, url FROM items";
            $database = new PDO('mysql:host=localhost;dbname=startandhome','root','');
            $results = $database->query($sql); 

            $contentregel = 'contentregelblauw';
            foreach($results as $row) 
            { 

                $itemnaam = $row['naam'];
                $itemUrl = $row['url'];

                echo "<div class=\"" .$contentregel ."\"><a href=\"#\" onclick=\"showeffect('".$itemUrl ."','".$itemnaam ."'); return false;\">" .$itemnaam ."</a></div>";

                if ($contentregel == 'contentregelgrijs')
                {
                    $contentregel = 'contentregelblauw';
                }
                else
                {
                    $contentregel = 'contentregelgrijs';
                }
            }


        ?>

html:

<iframe id="website" class="website" src=""></iframe>

Answer 1

it’s because facebook restricts hosting the page in other domain frame.
usuyally done by attaching the X-Frame-Options headers. X-frame-options

1. Facebook and twitter sites have x-frame-options, which means they will not allow cross origin calls. they restricted via x-frame-options.