This will give an idea how to share links in the social media using php code. I implement this code in one of my project which based on woocommerce. Happy Coding. Peace...

Link share in the social media

/*Which informatio i want to share in the social media*/
$product_title = get_the_title();
$product_url = urlencode(get_the_permalink());
$product_thumbnail = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID),'full');

/*Social Links structure*/
$twitter_url = 'https://twitter.com/intent/tweet?text='.$product_title.'&url='.$product_url.'&via=stoneuk';
$facebook_url = 'https://www.facebook.com/sharer/sharer.php?u='.$product_url;
$google_url = 'mailto:?Subject='.$product_title.'&body=Check out this product '.$product_url;
$pinterest_url = 'https://pinterest.com/pin/create/button/?url='.$product_url.'&media='.$product_thumbnail[0].'&description='.$product_title;

<a href="<?php echo $facebook_url;?>"><i class="fa fa-facebook" aria-hidden="true"></i> Share this product</a>
<a href="<?php echo $twitter_url?>"><i class="fa fa-twitter" aria-hidden="true"></i>Tweet this product </a>
<a href="<?php echo $pinterest_url?>"><i class="fa fa-pinterest-p" aria-hidden="true"></i>Tweet this product </a>
<a href="<?php echo $google_url;?>"><i class="fa fa-envelope-o" aria-hidden="true"></i>Mail this product </a>