PHP social sharer function for WordPress w/ FontAwesome

social-sharer.php

<?php
function squarecandy_get_share_icons($url, $text = '', $twitterhandle = '', $subject = 'I thought you might enjoy this...' ){

	// encode url and text parts
	$encodedurl = urlencode($url);
	$encodedtext = urlencode($text);
	$rawencodedtext = rawurldecode($text);

	// calculate the allowable tweet length... 140 - ( elipsis and two spaces [5 char] + the url [always counts as 23] + @twittername [calculate length] )
	$tweetlength = 140 - ( 5 + 23 + strlen($twitterhandle) );
	// build the tweet text
	$twittertext = substr( $text, 0, $tweetlength ) . '... ' . $twitterhandle;
	// encode tweet text
	$twittertext = urlencode($twittertext);

	// facebook
	// remember to set the facebook og meta tags on the page itself.
	// sharer.php only takes the url now; the rest comes from meta data
	$output  = '<a class="share-facebook share-link" href="https://www.facebook.com/sharer/sharer.php?u=';
	$output .= $encodedurl;
	$output .= '"><span class="screen-reader-text">share on facebook</span><span class="icon-facebook"></span></a>';

	// twitter
	$output .= '<a class="share-twitter share-link" href="https://twitter.com/share';
	$output .= '?text=' . $twittertext;
	$output .= '&amp;url=' . $encodedurl;
	$output .= '"><span class="screen-reader-text">tweet this</span><span class="icon-twitter"></span></a>';

	// email
	$output .= '<a class="share-email share-link" href="mailto:?';
	// $output .= 'subject=' . $rawencodedtext . '&amp;';
	$output .= 'subject=' . rawurldecode($subject) . '&amp;';
	$output .= 'body=%0A' . $rawencodedtext . '%0A' . $encodedurl;
	$output .= '"><span class="screen-reader-text">share by email</span><span class="icon-mail4"></span></a>';

	return $output;
}