Fix PHP error “called constructor method for WP_Widget… deprecated”

If you turn on WP_DEBUG and find this error:

Notice: The called constructor method for WP_Widget in anthemes_postcat is deprecated since version 4.3.0! Use
__construct()
instead. in /nas/content/live/lightlifemag/wp-includes/functions.php on line 4503

Change this:

class anthemes_postcat extends WP_Widget {

     function WP_Widget() {
      $widget_ops = array('description' => 'Posts by Categories' );
        parent::WP_Widget(false, $name = 'Custom: Posts by Categories',$widget_ops);  
    }

to this:
class anthemes_postcat extends WP_Widget {

     function __construct() {
      $widget_ops = array('description' => 'Posts by Categories' );
        parent::__construct(false, $name = 'Custom: Posts by Categories',$widget_ops);  
    }

Warning: Please note that if your plugin or theme is by a third-party who has updates, any updates will remove your fixes. Please notify the plugin author or theme author rather than making these changes yourself.

See also:

• Fix PHP error “Methods with same name as their class will not be constructors”
• Fix create_function() deprecated PHP function in WordPress
• Fix each() deprecated PHP function in WordPress