functions.php

/*

** http://wpvkp.com/add-social-media-sharing-buttons-to-wordpress-without-plugin/
** @blogvkp
** http://wpvkp.com/

*/

// Function to handle the thumbnail request for pinterest
function gpt_src($img)
{
  return (preg_match('~\bsrc="([^"]++)"~', $img, $matches)) ? $matches[1] : '';
}

function sbwp($content) {
	if(is_singular() || is_home()){
	
		$sbwpURL = get_permalink();
 
		$sbwpTitle = str_replace( ' ', '%20', get_the_title());
		$sbwpThumbnail = gpt_src(get_the_post_thumbnail());
 
		$twitterURL = 'https://twitter.com/intent/tweet?text='.$sbwpTitle.'&url='.$sbwpURL.'&via=sbwp';
		$facebookURL = 'https://www.facebook.com/sharer/sharer.php?u='.$sbwpURL;
		$googleURL = 'https://plus.google.com/share?url='.$sbwpURL;
		$bufferURL = 'https://bufferapp.com/add?url='.$sbwpURL.'&text='.$sbwpTitle;
		
		$pinterestURL = 'https://pinterest.com/pin/create/button/?url='.$sbwpURL.'&media='.$sbwpThumbnail[0].'&description='.$sbwpTitle;
 
		$content .= '<div class="sbwp-social">';
		$content .= '<h3>Show Some Love</h3> <a class="sbwp-link sbwp-twitter" href="'. $twitterURL .'" target="_blank">Twitter</a>';
		$content .= '<a class="sbwp-link sbwp-facebook" href="'.$facebookURL.'" target="_blank">Facebook</a>';
		$content .= '<a class="sbwp-link sbwp-googleplus" href="'.$googleURL.'" target="_blank">Google+</a>';
		$content .= '<a class="sbwp-link sbwp-buffer" href="'.$bufferURL.'" target="_blank">Buffer</a>';
		$content .= '<a class="sbwp-link sbwp-pinterest" href="'.$pinterestURL.'" target="_blank">Pin It</a>';
		$content .= '</div>';
		
		return $content;
	}else{
		return $content;
	}
};
add_filter( 'the_content', 'sbwp');