How to get Square Size Profile Image of Twitter and Facebook with Logo Embedded?

Hi

while i go through this site

(http://www.talenthouse.com/creativeinvites/preview/ae2dd0ca9ac9d1881f27132df12b6dd1/219),

i came to see that while i login with help of either by twitter or facebook ,with my profile image, the F logo for Facebook and T Logo for twitter is embe开发者_运维问答dded, how can i do that in PHP for facebook with help of Graph API??

If you look at the source of that page, you will see that the image is not actually embedded. They are just using css/html to overlay the "F"/"T" image:

<a>
  <span class="photo" style="background-image: url(https://graph.facebook.com/4/picture);" />
  <img class="fb-decorator" src="http://assets.talenthouse.com/images_01/fb-member.jpg">
  <strong class="name">Mark</strong>
</a>

They may also have some special css applied to those elements - try inspecting it with Firebug or Chrome Dev tools - but you can see that its not embedded.