WordPress AddThis plugin (v6+) - Output and control programmatically the AddThis floating sidebar with it's "Smart Layers API": https://www.addthis.com/academy/smart-layers-api/

addthis_layers_array.php

<?php

/**
* Output an AddThis floating share sidebar to the left with selected services.
*
* Notice 'desktop' and 'mobile' parameters, they take a Boolean data type as value, meaning it can be used to 
* allow a more dynamic control and display of the sharing sidebar.
*
* More options to play with can be found here in the docs: https://www.addthis.com/academy/smart-layers-api/
* Just notice to convert the JSON format in the examples to PHP's array() format 
* to add/change it's settings and display options.
*/
add_filter( 'addthis_layers_array', function ( $addthis_layers ) {
  
  $addthis_layers = array(
    'share' => array(
      'position'  => 'left',
      'services'  => 'twitter,facebook,linkedin,email',
      'desktop'   => true,
      'mobile'    => false
    )
  );

	return $addthis_layers;
});