Facebook pixel

Thanks. Did it already by adding the below code to function.php in my child theme. XXXXXXXXXX is a placeholder for the specific Facebook pixel code.

add_action('wp_head','amirz_hook_fb_pixel');

function amirz_hook_fb_pixel() {
$fb_p_code = "<!– 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','//connect.facebook.net/en_US/fbevents.js');

fbq('init', 'XXXXXXXXXX');
fbq('track', 'PageView');</script>
<noscript><img height='1' width='1' style='display:none'
src='https://www.facebook.com/tr?id=XXXXXXXXXX&ev=PageView&noscript=1'
/></noscript>
<!– End Facebook Pixel Code –>";
echo $fb_p_code;
}