- rawurlencode: documentation ( source)
<?php
function get_social_buttons() {
$hashed_tags = get_hashed_tags();
$thumb = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID), 'full' );
$html = '';
$html = '<ul class="social">';
$html .= '<li><a target="_blank" href="https://www.facebook.com/sharer/sharer.php?u=<' . rawurlencode(get_the_permalink()) .'><i class="fa fa-facebook fa-lg"></i></a></li>';
$html .= '<li><a target="_blank" href="http://www.pinterest.com/pin/create/button/?url=' . rawurlencode(get_bloginfo('url'). '/' .get_the_permalink()) .'&media='. rawurlencode($thumb[0]) .'&description=' . rawurlencode(get_the_title() . ' ' . $hashed_tags) .'"><i class="fa fa-pinterest fa-lg"></i></a></li>';
$html .= '<li><a target="_blank" href="http://twitter.com/home?status=' . rawurlencode(get_the_title() . ' ' . get_the_permalink() . ' ' . $hashed_tags()) .'><i class="fa fa-twitter fa-lg"></i></a></li>';
$html .= '</ul>';
return $html;
}