Facebook Follow Btn script hindering PHP include.

I'm trying to load all my follow buttons under a global php variable $follow. It was working until lines 13 - 20 was entered. It seems php has a problem integrating a script into it's vibe (not sure if it's a statement here?).

1. I put the twitter script outside and in the html file below the $follow php variable and it works, but this does not work with facebook.
2. I noticed I was getting errors around line 20 \'script\', \'facebook-jssdk\'));</script>'; and this was from the single quotaion marks; which I solved by using the escape character \ prior each occurence.

<?php
      $follow = '<div class="g-fol">
      <div class="g-follow" data-annotation="none" data-height="20" data-href="//plus.google.com/u/0/113326011335089676289" data-rel="author"></div>
      </div>
      </div>
      <div class="twit-fol">
        <a href="https://twitter.com/PreciseFormwork" class="twitter-follow-button" data-show-count="false" data-show-screen-name="false">Follow @PreciseFormwork</a>
      </div>
      <div class="pin-fol">
      <a data-pin-do="buttonPin" data-pin-count="none" href="https://www.pinterest.com/pin/create/button/?url=https%3A%2F%2Fuk.pinterest.com%2Fpreciseform0204%2F&media=https%3A%2F%2Ffarm8.staticflickr.com%2F7027%2F6851755809_df5b2051c9_z.jpg&description=Next%20stop%3A%20Pinterest"><img src="//assets.pinterest.com/images/pidgets/pinit_fg_en_rect_gray_20.png" /></a>
      </div>
<div class="fb-follow" data-href="https://www.facebook.com/Precise-Formwork-Ltd-192240647483941/" data-layout="button" data-show-faces="false"></div>';
      echo '<div id="fb-root"></div>';
        '<script>(function(d, s, id) {
          var js, fjs = d.getElementsByTagName(s)[0];
          if (d.getElementById(id)) return;
          js = d.createElement(s); js.id = id;
          js.src = "//connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v2.5";
          fjs.parentNode.insertBefore(js, fjs);
        }(document, \'script\', \'facebook-jssdk\'));</script>';
      echo $follow;
      echo '<p class="buttons"><button onclick="Generate">unclicked</button></p>';
?>

Anyone know any good ways around this? I suppose I could use a JS global variable but wouldn't I have to do this on each document. I have a tiny bit more experience in PHP than JS (still nothing really) but a lot of work's gone in on this already.

Regards