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How to add facebook pixel into your theme in function.php

When you need do facebook marketing… you need to add facebook pixel tracking into your wordpress website, this is example code for fb tracking code:

function add_fb_pixel() {
?>

<!-- Facebook Pixel Code -->
<script>
  !function(f,b,e,v,n,t,s)
  {if(f.fbq)return;n=f.fbq=function(){n.callMethod?
  n.callMethod.apply(n,arguments):n.queue.push(arguments)};
  if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
  n.queue=[];t=b.createElement(e);t.async=!0;
  t.src=v;s=b.getElementsByTagName(e)[0];
  s.parentNode.insertBefore(t,s)}(window, document,'script',
  'https://connect.facebook.net/en_US/fbevents.js');
  fbq('init', '123CHANGECODEHERE123');
  fbq('track', 'PageView');
</script>
<noscript><img height="1" width="1" style="display:none"
  src="https://www.facebook.com/tr?id=123CHANGECODEHERE123&ev=PageView&noscript=1"
/></noscript>
<!-- End Facebook Pixel Code -->

<?
}
add_action( 'wp_footer', 'add_fb_pixel' );

Make sure you change 123CHANGECODEHERE123 into your code tracking.. and put this code into theme file function.php

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