ga_trackable_phone_links.php

<?php
/*****************************************************************

    ***  Phone Link With Anayltics Tracking  ***
    
    ** Created By: Chris Steurer
    ** Date Added: 
    ** Contact: info@somedomain.com
    **
    ** Create clickable phone links that include a tracking 
    ** event to register the click in Google Anaytics
    
*****************************************************************/

//add [phone_link] shortcode
function shortcode_phone_link($atts, $content=null) {
  
  $phone_link_atts = shortcode_atts( array(
    'number' => '',
  ), $atts );
  
  $phone_number = trim($phone_link_atts['number']);
  $remove_characters = array('-', '_', '(', ')', '+', '.', ' ');
  $phone_number = str_replace($remove_characters, '', $phone_number);
  
  $phone_link = '<a href="tel:'.$phone_number.'" onClick="ga(\'send\', \'event\', \'Phone Call\', \'Clicked Phone Number\', \''.$phone_number.'\');">'.$phone_link_atts['number'].'</a>';
  
  return $phone_link;
}
add_shortcode('phone_link', 'shortcode_phone_link');